Download Exam 1 Term 3 | Evolution – Mark answer on Scantron AND test

Exam 1 Term 3 | Evolution – Mark answer on Scantron AND test!
Test # ____________
NAME _________________________ PERIOD ________
For reference, here are 5 points to summarize Darwin’s theory:





Individual organisms differ. Some of this variation is heritable.
Organisms produce more offspring than can survive. Many that do survive do not
reproduce.
Since more organisms are produced than can survive, they compete for limited resources
(food, space, water, etc.).
Each organism has different advantages and disadvantages in the struggle for existence.
Individuals best suited to their environment survive and reproduce most successfully. These
organisms pass their heritable traits to their offspring. Other individuals die or leave fewer
offspring. This process of natural selection causes species to change over time.
Species alive today are descended with modification from ancestral species that lived in the
distant past. This process, by which diverse species evolved from common ancestors, unites
all organisms on Earth into a single tree of life.
1. What is evolution?
a. An inherited characteristic
b. harmful change in genetic information
c. when an animal or plant changes
d. When populations of organisms change over time
2. Darwin’s theory has 2 parts: (1) The ability of an organism to survive and reproduce in its natural
environment is called
a. evolution
b. fitness
c. natural selection
d. use and disuse
3. Part (2) of his theory, Common Descent with modification, is when
a. Each living species has descended, with changes, from other species over time
b. Individuals at the upper and lower ends of a curve have the highest fitness
c. Small groups migrate to isolated new places
d. Two populations are separated by geographic barriers
The diagrams below show changes in a desert lizard population.
4. Which biological concept is illustrated (in the lizard picture on the last page)?
A. polygenic traits
B. natural selection
C. sex-linked inheritance
D. silent mutations
5. Which term best describes the evolution of two species of frogs separated by a mountain range?
A. mutation
B. vestigal structures
C. geographical isolation
D. camouflage
6. A group of squirrels were living together in the same forest. Because of an earthquake the forest was split into two
separate forests divided by a large, rapid river. Squirrels were separated equally between the two different forests.
Millennia later these two populations of squirrels were two different species. Which of the following would be the
most plausible explanation?
A. Artificial selection has occurred because the environmental pressures for the first group of squirrels was
different than those for the second
B. Evolution has occurred because squirrel populations diverged over time
C. Evolution has occurred because the squirrels became more complex over time
D. Ionizing radiation from the sun has caused mutations in one group of squirrels
E. Random mating has occurred because there were half as many squirrels to mate with
The pictures below show bone structures in three animals.
7. What does the similarity in structure of the bones of these animals suggest?
A. the chemical make-up of these animals is exactly the same.
B. the size of these bones is the same.
C. these species developed at the same time and location.
D. these species share common ancestors.
8. The statement "dinosaur fossils are found in rock containing many plant fossils" is an example of
a. a law
b. a theory
c. an assumption
d. an observation
e. superstition
9. Which of the following provides the most conclusive evidence that organisms of two different species share a
common ancestor?
A. They have similar body movements.
B. They have similar DNA sequences.
C. They live in the same ecosystem.
D. They reproduce at the same time.
10. Darwin's and Wallace's observations led them each to develop a hypothesis to explain the evidences that they had
observed. Over time, these hypotheses have been supported by scientists studying many different organisms.
These hypotheses are inferences, which make up the Theory of Evolution. Why are they known as inferences?
a. Because religion and philosophy do not support them
b. They are guesses, not supported by facts or valid observations
c. They are supported by many experiments and observations
d. They are supported by some experiments, but not by observations from nature
The drawings below show a turtle embryo and a chicken embryo.
11. Which of the following statements is supported by the similarities between these embryos?
A. The turtle is more advanced than the chicken.
B. The chicken has more offspring than the turtle.
C. The turtle and the chicken are similar as adults.
D. The chicken and the turtle share a common ancestor.
12. Porcupine quills, plant photosynthesis, and wolves hunting in packs are all examples of
a. Adaptations
b. Fitness
c. Genetic mutations
d. Natural selection
e. Survival of the fittest
13. What didn’t Darwin know about that could have helped him understand his theory better?
a. Genetics
b. Geology
c. Oceanography
d. Plant science
e. World geography
14. Genes can be changed by all the following except
a. Learning and memory
b. Mutations
c. Sexual reproduction
d. Surgery
e. A & D
15. What is the best description of a population?
a. A group of a single species that can have offspring
b. A group of a single species that can interbreed and produce fertile offspring
c. All the living and non-living factors in the environment
d. Several species in a geographic area
16. Once upon a time there was an island covered with thick rain forest. In the forest lived a population of
monkeys. Some of the monkeys had long fingers and tails. They were skilled at leaping from tree to tree
and gathering food high in the trees. Other monkeys had shorter fingers and tails. They could do a pretty
good job gathering food in the trees, but because of their shorter fingers and tails, they spent more time on
the ground or lower tree levels gathering their food. One day a bunch of bulldozers came in and leveled the
forest. The monkeys all ran to a hill screaming and watching the devastation. You tell the rest of the story:
What monkeys are going to survive best, and why?
a. Monkeys with long fingers/tails; better adapted to pick up food in a variety of places
b. Monkeys with long fingers/tails; more exercise increases their fitness
c. Monkeys with short fingers/tails; accustomed to searching for and finding food on the ground
d. Monkeys with short fingers/tails; tails will not get caught on tree stumps
17. Choose the BEST description below of how fossil layers are evidence of evolution.
a. Different sets of organisms can be found in different rock layers, indicating change over time
b. More complex organisms are found as you move up the rock layers
c. More primitive organisms are found as you move up the rock layers
d. Some rock layers have no organisms at all, which indicates abrupt changes in life
18. The combined genetic information of all members of a particular population forms a
a. gene pool
b. niche
c. phenotype
d. population
19. Traits that are controlled by more than one gene, such as human height, are known as
a. single-gene traits
b. polygenic traits
c. recessive traits
d. dominant traits
20. The type of selection in which individuals of average size have greater fitness than small or large
individuals is called
a. disruptive selection
b. stabilizing selection
c. directional selection
d. genetic drift
21. The type of selection in which individuals at one end of a curve have the highest fitness is called
a. stabilizing selection
b. disruptive selection
c. directional selection
d. the founder effect
22. The type of selection in which individuals at either end of a curve—but not in the middle—have the highest
fitness is called
a. stabilizing selection
b. disruptive selection
c. directional selection
d. the founder effect
23. You discover a population of deer with 50 deer who have a brown coat color and 50 who have a tan coat
color. What is the relative frequency of these genes?
a. 1:1
b. 5:5
c. 50% & 50%
d. 50:50
e. All of the above
24. 10 student in class have a Widow’s Peak, and 20 do not. What is the relative frequency?
a. 1:3
b. 2 (no Widow’s peak) : 1 (Widow’s peak)
c. 33% Widow’s peak , 67% no Widow’s peak
d. 4:1
e. None of the above
EXTRA CREDIT:
25. Cheetahs have come close to extinction due to hunting, drought, and disease. There is now very little genetic
variation in cheetah populations.
Which of the following is a result of the limited genetic variation in the current cheetah populations compared to
earlier cheetah populations with more variation?
a. Cheetahs in current populations are less able to interbreed with other species.
b. Cheetahs in current populations are more resistant to new diseases.
c. The current cheetah populations are less likely to be able to adapt to environmental changes.
d. The survival rate of young cheetahs is increased in current populations.
26. Which of the following is an example of the Founder Effect?
a. A giant razor blade slices the Earth in half, hurtling the Western Hemisphere into oblivion. Only
people in the Eastern Hemisphere survive.
b. A large population of mice lives in a hay field. Farmer Miguel comes along and ploughs half the
field. Half the mice die.
c. A population of 30 cows begin to get mad cow disease, and 3 cows die.
d. A small group of guppies (a fish) is taken from one lake to a different lake where they are isolated
from their original population.
e. A small population of guppies (a fish) lives in a lake in the Mohave Desert. An unusually dry season
comes, half the lake dries up, and half the guppies die.
Exam 1 Term 3 | Evolution – Mark answer on Scantron AND test!
Test # ____________
NAME _________________________ PERIOD ________
For reference, here are 5 points to summarize Darwin’s theory:





Individual organisms differ. Some of this variation is heritable.
Organisms produce more offspring than can survive. Many that do survive do not
reproduce.
Since more organisms are produced than can survive, they compete for limited resources
(food, space, water, etc.).
Each organism has different advantages and disadvantages in the struggle for existence.
Individuals best suited to their environment survive and reproduce most successfully. These
organisms pass their heritable traits to their offspring. Other individuals die or leave fewer
offspring. This process of natural selection causes species to change over time.
Species alive today are descended with modification from ancestral species that lived in the
distant past. This process, by which diverse species evolved from common ancestors, unites
all organisms on Earth into a single tree of life.
1. What is evolution?
a. An inherited characteristic
b. When populations of organisms change over time
c. harmful change in genetic information
d. when an animal or plant changes
2. Darwin’s theory has 2 parts: (1) The ability of an organism to survive and reproduce in its natural
environment is called
a. natural selection
b. use and disuse
c. fitness
d. evolution
3. Part (2) of his theory, Common Descent with modification, is when
a. Two populations are separated by geographic barriers
b. Each living species has descended, with changes, from other species over time
c. Small groups migrate to isolated new places
d. Individuals at the upper and lower ends of a curve have the highest fitness
The diagrams below show changes in a desert lizard population.
4. Which biological concept is illustrated (in the lizard picture on the last page)?
A. polygenic traits
B. natural selection
C. sex-linked inheritance
D. silent mutations
5. Which term best describes the evolution of two species of frogs separated by a mountain range?
A. mutation
B. vestigal structures
C. geographical isolation
D. camouflage
6. A group of squirrels were living together in the same forest. Because of an earthquake the forest was split into two
separate forests divided by a large, rapid river. Squirrels were separated equally between the two different forests.
Millennia later these two populations of squirrels were two different species. Which of the following would be the
most plausible explanation?
A. Evolution has occurred because the squirrels became more complex over time
B. Evolution has occurred because squirrel populations diverged over time
C. Random mating has occurred because there were half as many squirrels to mate with
D. Ionizing radiation from the sun has caused mutations in one group of squirrels
E. Artificial selection has occurred because the environmental pressures for the first group of squirrels was
different than those for the second
The pictures below show bone structures in three animals.
7. What does the similarity in structure of the bones of these animals suggest?
A. the size of these bones is the same.
B. these species share common ancestors.
C. these species developed at the same time and location.
D. the chemical make-up of these animals is exactly the same.
8. The statement "dinosaur fossils are found in rock containing many plant fossils" is an example of
a. a theory
b. an observation
c. an assumption
d. a law
e. superstition
9. Which of the following provides the most conclusive evidence that organisms of two different species share a
common ancestor?
A. They live in the same ecosystem.
B. They reproduce at the same time.
C. They have similar DNA sequences.
D. They have similar body movements.
10. Darwin's and Wallace's observations led them each to develop a hypothesis to explain the evidences that they had
observed. Over time, these hypotheses have been supported by scientists studying many different organisms.
These hypotheses are inferences, which make up the Theory of Evolution. Why are they known as inferences?
a. They are guesses, not supported by facts or valid observations
b. They are supported by many experiments and observations
c. They are supported by some experiments, but not by observations from nature
d. Because religion and philosophy do not support them
The drawings below show a turtle embryo and a chicken embryo.
11. Which of the following statements is supported by the similarities between these embryos?
A. The turtle is more advanced than the chicken.
B. The chicken has more offspring than the turtle.
C. The turtle and the chicken are similar as adults.
D. The chicken and the turtle share a common ancestor.
12. Porcupine quills, plant photosynthesis, and wolves hunting in packs are all examples of
a. Natural selection
b. Survival of the fittest
c. Fitness
d. Adaptations
e. Genetic mutations
13. What didn’t Darwin know about that could have helped him understand his theory better?
a. Plant science
b. World geography
c. Genetics
d. Oceanography
e. Geology
14. Genes can be changed by all the following except
a. Sexual reproduction
b. Mutations
c. Surgery
d. Learning and memory
e. C & D
15. What is the best description of a population?
a. Several species in a geographic area
b. A group of a single species that can interbreed and produce fertile offspring
c. A group of a single species that can have offspring
d. All the living and non-living factors in the environment
16. Once upon a time there was an island covered with thick rain forest. In the forest lived a population of
monkeys. Some of the monkeys had long fingers and tails. They were skilled at leaping from tree to tree
and gathering food high in the trees. Other monkeys had shorter fingers and tails. They could do a pretty
good job gathering food in the trees, but because of their shorter fingers and tails, they spent more time on
the ground or lower tree levels gathering their food. One day a bunch of bulldozers came in and leveled the
forest. The monkeys all ran to a hill screaming and watching the devastation. You tell the rest of the story:
What monkeys are going to survive best, and why?
a. Monkeys with long fingers/tails; more exercise increases their fitness
b. Monkeys with long fingers/tails; better adapted to pick up food in a variety of places
c. Monkeys with short fingers/tails; accustomed to searching for and finding food on the ground
d. Monkeys with short fingers/tails; tails will not get caught on tree stumps
17. Choose the BEST description below of how fossil layers are evidence of evolution.
a. Some rock layers have no organisms at all, which indicates abrupt changes in life
b. More primitive organisms are found as you move up the rock layers
c. Different sets of organisms can be found in different rock layers, indicating change over time
d. More complex organisms are found as you move up the rock layers
18. The combined genetic information of all members of a particular popullation forms a
a. gene pool
b. niche
c. phenotype
d. population
19. Traits that are controlled by more than one gene, such as human height, are known as
a. single-gene traits
b. polygenic traits
c. recessive traits
d. dominant traits
20. The type of selection in which individuals of average size have greater fitness than small or large
individuals is called
a. disruptive selection
b. stabilizing selection
c. directional selection
d. genetic drift
21. The type of selection in which individuals at one end of a curve have the highest fitness is called
a. stabilizing selection
b. disruptive selection
c. directional selection
d. the founder effect
22) The type of selection in which individuals at either end of a curve—but not in the middle—have the highest
fitness is called
a. stabilizing selection
b. disruptive selection
c. directional selection
d. the founder effect
23. You discover a population of deer with 50 deer who have a brown coat color and 50 who have a tan coat
color. What is the relative frequency of these genes?
a. 1:1
b. 50% & 50%
c. 50:50
d. 5:5
e. All of the above
24. 10 student in class have a Widow’s Peak, and 20 do not. What is the relative frequency?
a. 1:3
b. 2 (no Widow’s peak) : 1 (Widow’s peak)
c. 33% Widow’s peak , 67% no Widow’s peak
d. 4:1
e. None of the above
EXTRA CREDIT:
25. Cheetahs have come close to extinction due to hunting, drought, and disease. There is now very little genetic
variation in cheetah populations.
Which of the following is a result of the limited genetic variation in the current cheetah populations compared to
earlier cheetah populations with more variation?
a. Cheetahs in current populations are more resistant to new diseases.
b. The survival rate of young cheetahs is increased in current populations.
c. Cheetahs in current populations are less able to interbreed with other species.
d. The current cheetah populations are less likely to be able to adapt to environmental changes.
26. Which of the following is an example of the Founder Effect?
a. A large population of mice lives in a hay field. Farmer Miguel comes along and ploughs half the
field. Half the mice die.
b. A small group of guppies (a fish) is taken from one lake to a different lake where they are isolated
from their original population.
c. A giant razor blade slices the Earth in half, hurtling the Western Hemisphere into oblivion. Only
people in the Eastern Hemisphere survive.
d. A population of 30 cows begin to get mad cow disease, and 3 cows die.
e. A small population of guppies (a fish) lives in a lake in the Mohave Desert. An unusually dry season
comes, half the lake dries up, and half the guppies die.
Examen 1 plazo 3 | Evolución – respuesta de Mark Scantron y probar! Prueba # __________
NOMBRE _________________________ ________ PERÍODO
Como referencia, aquí hay 5 puntos para resumir la teoría de Darwin:





Difieren de los organismos individuales. Parte de esta variación es heredable.
Los organismos producen más descendientes que pueden sobrevivir. Muchos de los que
sobreviven no se reproducen.
Dado que se producen más organismos que pueden sobrevivir, compiten por recursos limitados
(alimentos, espacio, agua, etc.).
Cada organismo tiene diferentes ventajas y desventajas en la lucha por la existencia. Individuos
mejores adaptados a su entorno de sobreviven y reproducen con más éxito. Estos organismos
pasan sus rasgos hereditarios a su descendencia. Otras personas mueren o dejan menos
descendencia. Este proceso de selección natural hace que las especies cambian con el tiempo.
Especie viva hoy descienden con modificación de especies ancestrales que vivieron en el pasado
distante. Este proceso, mediante el cual diversas especies evolucionaron de antepasados
comunes, une a todos los organismos en la tierra en un solo árbol de la vida.
1.
¿Qué es evolución?
a. Una característica heredada
b. cambio perjudicial en la información genética
c. cuando un animal o planta cambios
d. Cuando las poblaciones de organismos cambian con el tiempo
2.
La teoría de Darwin tiene 2 partes: (1) se denomina la capacidad de un organismo para sobrevivir y
reproducirse en su ambiente natural
a. evolución
b. gimnasio
c. selección natural
d. uso y desuso
3. Parte (2) de su teoría, ascendencia común con modificación, es cuando
a. Cada especie de vida ha descendido, con cambios de otras especies en el tiempo
b. Los individuos en los extremos superiores e inferiores de una curva tienen la mayor aptitud
c. Pequeños grupos migran a nuevos lugares aislados
d. Dos poblaciones están separadas por barreras geográficas
Los diagramas siguientes muestran cambios en una población de lagarto desierto.
4. El concepto de que biológica es ilustrada (en la foto de lagarto en la última página)?
A. características poligénicas
B. la selección natural
C. herencia ligado al sexo
D. mutaciones silenciosas
5. ¿Qué término que mejor describe la evolución de dos especies de ranas, separadas por una cadena montañosa?
Mutación a.
B. estructuras vestigial
C. aislamiento geográfico
D. camuflaje
6. Un grupo de ardillas vivían juntos en el mismo bosque. Debido a un terremoto, el bosque fue dividido en dos
bosques independientes divididos por un río grande y rápido. Las ardillas se separaron igualmente entre los dos
bosques diferentes. Milenios más tarde estas dos poblaciones de ardillas eran dos especies diferentes. ¿Cuál de las
siguientes sería la explicación más plausible?
A. Selección artificial ha producido debido a las presiones ambientales para el primer grupo de ardillas era
diferente a los de la segunda
B. Evolución se ha producido porque las poblaciones de ardilla divergieron en el tiempo
C. Evolución se ha producido porque las ardillas se hizo más complejas con el tiempo
D. Las radiaciones ionizantes del sol ha causado mutaciones en un grupo de ardillas
E. Apareamiento aleatorio ocurrió porque hubo medio tantas ardillas para aparearse con
Las siguientes imágenes muestran estructuras óseas en tres animales.
7. ¿Qué sugiere la similitud en la estructura de los huesos de estos animales?
A. la composición química de estos animales es exactamente el mismo.
B. el tamaño de estos huesos es el mismo.
C. estas especies se desarrollaron al mismo tiempo y ubicación.
D. estas especies comparten ancestros comunes.
8. La declaración "fósiles se encuentran en la roca que contiene muchas plantas fósiles de dinosaurio" es un ejemplo
de
a. una ley
b. una teoría
c. una suposición
d. una observación
e. superstición
9. ¿Cuál de las siguientes proporciona la evidencia más concluyente que organismos de dos especies diferentes
comparten a un ancestro común?
A. Tienen movimientos corporales similares.
B. Tienen secuencias de ADN similares.
C. Viven en el mismo ecosistema.
D. Se reproducen al mismo tiempo.
10. Las observaciones de Darwin y Wallace llevaron cada uno para desarrollar una hipótesis para explicar las
evidencias que habían observado. Con el tiempo, los científicos estudian muchos diferentes organismos han
apoyado estas hipótesis. Estas hipótesis son inferencias, que conforman la teoría de la evolución. ¿Por qué son
conocidos como inferencias?
a. Porque la religión y la filosofía no apoyarlos
b. Son suposiciones, no admitidas hechos u observaciones válidas
c. Son compatibles con muchos experimentos y observaciones
d. Están soportados por algunos experimentos, pero no por observaciones de naturaleza
Los dibujos a continuación muestran una tortuga embrión y un embrión de pollo.
11. ¿Cuál de las siguientes afirmaciones es apoyado por las similitudes entre estos embriones?
R. la tortuga es más avanzada que el pollo.
B. el pollo tiene más descendencia que la tortuga.
C. la tortuga y el pollo son similares como adultos.
D. el pollo y la tortuga comparte a un ancestro común.
12. Caza en manadas de lobos, púas de puercoespín y fotosíntesis de las plantas son ejemplos de
a. Adaptaciones
b. Gimnasio
c. Mutaciones genéticas
d. Selección natural
e. Supervivencia del más apto
13. ¿Lo que no sabía Darwin acerca de que podría haber le ayudó a entender mejor su teoría?
a. Genética
b. Geología
c. Oceanografía
d. Plant science
e. Geografía mundial
14. Genes pueden cambiarse por todas las siguientes excepto
a. Aprendizaje y la memoria
b. Mutaciones
c. Reproducción sexual
d. Cirugía
e. C & d
15. ¿Cuál es la mejor descripción de una población?
a. Un grupo de una sola especie que puede tener descendencia
b. Un grupo de una sola especie que puede se reproducen entre sí y producir descendencia fértil
c. Todos los factores vivos y no vivos en el medio ambiente
d. Varias especies en un área geográfica
16. Una vez fue una isla recubierta de espesa selva. En el bosque vivía una población de monos. Algunos de los
monos tenían colas y dedos largos. Fueron capacitados en saltando de árbol en árbol y la recolección de
alimentos altos en los árboles. Otros monos tenían dedos más cortos y las colas. Podían hacer un buen
trabajo recogiendo alimentos en los árboles, pero debido a sus cortos dedos y colas, pasaron más tiempo en
el suelo o en niveles inferiores del árbol recogiendo sus alimentos. Un día un montón de excavadoras
llegaron y nivela el bosque. Los monos que todos corrían a una colina gritando y mirando la devastación.
¿Dice el resto de la historia: lo monos van a sobrevivir mejor y por qué?
a. Monos con dedos largos y colas; mejor adaptada para recoger alimentos en una variedad de lugares
b. Monos con dedos largos y colas; más ejercicio aumenta su aptitud
c. Monos con dedos cortos y colas; acostumbrados a buscar y encontrar comida en el suelo
d. Monos con cortos dedos y colas; colas no se detectarán en troncos de árbol
17. Elegir la mejor descripción debajo de las capas fósiles como evidencia de la evolución.
a. Diferentes grupos de organismos pueden encontrarse en las capas de roca diferentes, indicando el
cambio en el tiempo
b. Organismos más complejos se encuentran como mover las capas de roca
c. Los organismos más primitivos se encuentran como mover las capas de roca
d. Algunas capas de roca no que los organismos, que indica cambios bruscos en la vida
18. La información genética combinada de todos los miembros de la forma de una población determinada una
Piscina de gene a.
nicho b.
fenotipo de c.
población de d.
19. Rasgos que son controladas por más de un gen, como la altura humana, son conocidos como
rasgos de single-gene a.
b. rasgos poligénicas
rasgos recesivos c.
rasgos dominantes de d.
20. Se llama el tipo de selección en que individuos de tamaño promedio tiene mayor aptitud que los individuos
pequeños o grandes
a. selección disruptiva
b. estabilización de selección
selección direccional de c.
deriva genética de d.
21. El tipo de selección en la que individuos en un extremo de una curva tienen la mayor aptitud se denomina
a. selección de estabilización
b. selección disruptiva
selección direccional de c.
d. el efecto fundador
22. El tipo de selección en que individuos en los extremos de una curva, pero no en el medio, tienen la
mayor aptitud se llama
a. selección de estabilización
b. selección disruptiva
selección direccional de c.
d. el efecto fundador
23. Descubra una población de ciervos con 50 ciervos que tienen un color de pelaje marrón y 50 que tienen un
color bronceado escudo. ¿Cuál es la frecuencia relativa de estos genes?
un.
1:1
b.
5:5
c.
50% & 50%
d.
50:50
e. Todo lo anterior
24. 10 alumnos en la clase tienen un pico de la viuda, y no 20. ¿Cuál es la frecuencia relativa?
un.
1:3
b. 2 (ningún pico de la viuda): 1 (pico de viuda)
c. Pico de la viuda de 33%, 67% no pico de viuda de
d.
4:1
e. Ninguna de las anteriores
CRÉDITO ADICIONAL:
25. Guepardos han llegado en peligro de extinción debido a la enfermedad, la sequía y la caza. Ahora hay variación genética muy poco en las
poblaciones de guepardo.
¿Cuál de las siguientes es el resultado de la variación genética limitada en las poblaciones de guepardo actual en comparación con
anteriores poblaciones de guepardo con más variación?
a. Guepardos en poblaciones actuales son menos capaces de con otras especies se reproducen entre sí.
b. Guepardos en poblaciones actuales son más resistentes a enfermedades nuevas.
c. Las actuales poblaciones de guepardo tienen menos probabilidades de ser capaz de adaptarse a los cambios ambientales.
d. La tasa de supervivencia de guepardos jóvenes es mayor en las poblaciones actuales.
26. ¿Cuál de las siguientes es un ejemplo del efecto fundador?
a. Una hoja de afeitar gigante rebanadas de la tierra en la mitad, mueve el hemisferio occidental en el olvido. Sólo las personas
en el hemisferio oriental sobreviven.
b. a población de ratones vive en un campo de heno. Agricultor Miguel viene y arados de la mitad del campo. La mitad de los
ratones mueren.
c. Una población de 30 vacas comienzan a llegar las vacas locas, y 3 vacas mueren.
d. Un pequeño grupo de guppies (un pez) es tomado de un lago a un lago diferente donde están aislados de su población
original.
e. a pequeña población de guppies (pescado) vive en un lago en el desierto de Mojave. Viene de una temporada inusualmente
seca, la mitad del lago se seca y mueren la mitad de los guppies.