evolution of populations
... Suppose bird population lives in area where climate change causes medium size seeds become scarce while large and small seeds are still plentiful. Birds with bigger or smaller beaks would have greater fitness and the population may split in to TWO GROUPS. One that eats small seeds and one that eats ...
... Suppose bird population lives in area where climate change causes medium size seeds become scarce while large and small seeds are still plentiful. Birds with bigger or smaller beaks would have greater fitness and the population may split in to TWO GROUPS. One that eats small seeds and one that eats ...
Note Guide – Chapter 36
... 2. State the Hardy-Weinberg theorem and describe the usefulness of the Hardy-Weinberg model to population geneticists. 3. List the conditions a population must meet in order to maintain Hardy-Weinberg equilibrium. 4. Explain how genetic drift, gene flow, mutation, nonrandom mating and natural select ...
... 2. State the Hardy-Weinberg theorem and describe the usefulness of the Hardy-Weinberg model to population geneticists. 3. List the conditions a population must meet in order to maintain Hardy-Weinberg equilibrium. 4. Explain how genetic drift, gene flow, mutation, nonrandom mating and natural select ...
Document
... Detecting Loci Under Selection The method of QTL mapping (when we have a pedigree) or association mapping (with a dense set of markers) allows us to find genes that influence a specified trait. More generally, we would like to be able to detect those loci that have recently been under selection. Th ...
... Detecting Loci Under Selection The method of QTL mapping (when we have a pedigree) or association mapping (with a dense set of markers) allows us to find genes that influence a specified trait. More generally, we would like to be able to detect those loci that have recently been under selection. Th ...
Population genetics (III)
... molecular basis of adaptation - process The field of molecular evolution has been dominated by phylogenetics and molecular systematics. These endeavors have been extremely successful in supporting and elucidating the dynamics of point #1 above. Molecular evolutionists have been relatively less succe ...
... molecular basis of adaptation - process The field of molecular evolution has been dominated by phylogenetics and molecular systematics. These endeavors have been extremely successful in supporting and elucidating the dynamics of point #1 above. Molecular evolutionists have been relatively less succe ...
Solomon Chapter 19
... 17. Much of genetic polymorphism is not evident because it doesn’t produce distinct ____________________________________ 18. ______________________________________________ occurs when a genotype such as Aa has higher degree of fitness than either AA or aa. 19. Selection that acts to decrease the fre ...
... 17. Much of genetic polymorphism is not evident because it doesn’t produce distinct ____________________________________ 18. ______________________________________________ occurs when a genotype such as Aa has higher degree of fitness than either AA or aa. 19. Selection that acts to decrease the fre ...
Extra Credit For Biology 4: _____ Points Evolution
... According to the tree what is the group that is most closely related to dinosaurs and birds? ...
... According to the tree what is the group that is most closely related to dinosaurs and birds? ...
Study Guide
... a. If mating is random then each allele has an equal chance of uniting with any other allele and the proportions in the population will remain the same. However in nature most mating is not random because most individuals choose their partner Sexual selection – nonrandom mating in which mates are s ...
... a. If mating is random then each allele has an equal chance of uniting with any other allele and the proportions in the population will remain the same. However in nature most mating is not random because most individuals choose their partner Sexual selection – nonrandom mating in which mates are s ...
Creationism v. Evolution
... Evolutionary Theory does not: • Propose the origin of life. “There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that whilst this planet has gone cycling on according to the fixed law of gravity, from so s ...
... Evolutionary Theory does not: • Propose the origin of life. “There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that whilst this planet has gone cycling on according to the fixed law of gravity, from so s ...
Evolution Notes (March 14th to March 17th)
... • The # of phenotypes produced for a given trait depends on how many genes control the trait • Single-gene traits have 2 alleles • Polygenic traits are traits controlled by 2 or more alleles • Represented by a bell-like graph ...
... • The # of phenotypes produced for a given trait depends on how many genes control the trait • Single-gene traits have 2 alleles • Polygenic traits are traits controlled by 2 or more alleles • Represented by a bell-like graph ...
Lecture Ch 23 The evolution of populations
... evolution is occurring based on the H-W equilibirum) 2. bottleneck effect- can cause genetic drift by some disaster (natural or human-caused) unselectively killing individuals The surviving population is not representative of the original population, therefore it’s like genetic drift. 3. founder eff ...
... evolution is occurring based on the H-W equilibirum) 2. bottleneck effect- can cause genetic drift by some disaster (natural or human-caused) unselectively killing individuals The surviving population is not representative of the original population, therefore it’s like genetic drift. 3. founder eff ...
Mutation - Biology1
... look very similar. However, they are not closely related. Their resemblance is most likely an example of… ...
... look very similar. However, they are not closely related. Their resemblance is most likely an example of… ...
File - Biology by Napier
... What is an example of artificial selection (human caused evolution)? Spraying pesticides resulting in only insects with resistant genes surviving (caused by “natural” selection); poachers killing tusked elephants leaving tuskless to reproduce ...
... What is an example of artificial selection (human caused evolution)? Spraying pesticides resulting in only insects with resistant genes surviving (caused by “natural” selection); poachers killing tusked elephants leaving tuskless to reproduce ...
EvolutionStudyGuide Answer Key
... 10) A population of squirrels is preyed on by small hawks. The smaller squirrels can escape into burrows. The larger squirrels can fight off the hawks. After several generations, the squirrels in the area tend to be very small or very large. What process is responsible for this outcome, and what wo ...
... 10) A population of squirrels is preyed on by small hawks. The smaller squirrels can escape into burrows. The larger squirrels can fight off the hawks. After several generations, the squirrels in the area tend to be very small or very large. What process is responsible for this outcome, and what wo ...
Chapter 16 summary
... Darwin’s theory of evolution by natural selection explained how life on Earth changed, or evolved, over many generations. What Darwin did not know was how heritable traits were passed down through each generation. The study of genetics helps scientists understand the relationship between inheritance ...
... Darwin’s theory of evolution by natural selection explained how life on Earth changed, or evolved, over many generations. What Darwin did not know was how heritable traits were passed down through each generation. The study of genetics helps scientists understand the relationship between inheritance ...
Name: Date - Dorsey High School
... 1. What is our definition of “evolution”? __________________________________________________________ ____________________________________________________________________________________________ 2. Natural selection tells us that organisms with the most favorable ___________________ will survive, rep ...
... 1. What is our definition of “evolution”? __________________________________________________________ ____________________________________________________________________________________________ 2. Natural selection tells us that organisms with the most favorable ___________________ will survive, rep ...
The Evolutionary Synthesis and its Critics
... Discussion Question One of the questions confronting Darwin was how did Natural Selection results in new species. Has population genetics answered that question? A. Yes. In large populations Natural Selection can drive populations to be sufficiently different that they no longer are parts of the sam ...
... Discussion Question One of the questions confronting Darwin was how did Natural Selection results in new species. Has population genetics answered that question? A. Yes. In large populations Natural Selection can drive populations to be sufficiently different that they no longer are parts of the sam ...
encouraging diversity : mcroevolution via selection
... mechanism contribute to the change in the genetic makeup of a population over time. Darwin’s theory of natural selection states that inheritable variations occur in individuals in a population. Due to competition for resources that are often limited, individuals with more favorable variations or phe ...
... mechanism contribute to the change in the genetic makeup of a population over time. Darwin’s theory of natural selection states that inheritable variations occur in individuals in a population. Due to competition for resources that are often limited, individuals with more favorable variations or phe ...
Summary document
... Theory adaptions develop by natural selection, not with the direct purpose of making an individual suited to its environment. Characteristics do not develop during the lifetime of one individual. Characteristics that do develop during a lifetime are acquired characteristic and cannot be inheri ...
... Theory adaptions develop by natural selection, not with the direct purpose of making an individual suited to its environment. Characteristics do not develop during the lifetime of one individual. Characteristics that do develop during a lifetime are acquired characteristic and cannot be inheri ...
Print Name: UNR I.D. Number: BIOL 191 SPRING 2005 Midterm 1
... C. exhibit a method of transmission that is best described as horizontal. D. exhibit a method of transmission that is best described as vertical. E. (Both A & D) 6. Differential reproductive success resulting from competition between members of one sex to achieve matings and/or fertilizations A. alw ...
... C. exhibit a method of transmission that is best described as horizontal. D. exhibit a method of transmission that is best described as vertical. E. (Both A & D) 6. Differential reproductive success resulting from competition between members of one sex to achieve matings and/or fertilizations A. alw ...
Group selection
Group selection is a proposed mechanism of evolution in which natural selection is imagined to act at the level of the group, instead of at the more conventional level of the individual.Early authors such as V. C. Wynne-Edwards and Konrad Lorenz argued that the behavior of animals could affect their survival and reproduction as groups.From the mid 1960s, evolutionary biologists such as John Maynard Smith argued that natural selection acted primarily at the level of the individual. They argued on the basis of mathematical models that individuals would not altruistically sacrifice fitness for the sake of a group. They persuaded the majority of biologists that group selection did not occur, other than in special situations such as the haplodiploid social insects like honeybees (in the Hymenoptera), where kin selection was possible.In 1994 David Sloan Wilson and Elliott Sober argued for multi-level selection, including group selection, on the grounds that groups, like individuals, could compete. In 2010 three authors including E. O. Wilson, known for his work on ants, again revisited the arguments for group selection, provoking a strong rebuttal from a large group of evolutionary biologists. As of yet, there is no clear consensus among biologists regarding the importance of group selection.