Powerpoint - Helena High School
... Vestigial Structures • inherited from ancestors but have lost much or all of their original function due to different selection pressures acting on the descendent ...
... Vestigial Structures • inherited from ancestors but have lost much or all of their original function due to different selection pressures acting on the descendent ...
Unit 4 Evolution PowerPoint
... island faced conditions that were different from those on the mainland. • Therefore, the species gradually changed over time to adapt to their new environment. This is called evolution. ...
... island faced conditions that were different from those on the mainland. • Therefore, the species gradually changed over time to adapt to their new environment. This is called evolution. ...
CHAPTER 15
... He came to believe that populations of birds and animals from the mainland (South America) changed after reaching the Galápagos. Darwin hypothesized that new species could appear gradually through small changes in ancestral species. Darwin inferred that if humans could change species by artifi ...
... He came to believe that populations of birds and animals from the mainland (South America) changed after reaching the Galápagos. Darwin hypothesized that new species could appear gradually through small changes in ancestral species. Darwin inferred that if humans could change species by artifi ...
Species Change Over Time
... • Individual organisms with a particular adaptation will survive long enough to reproduce • Adaptation becomes more common in next generation ...
... • Individual organisms with a particular adaptation will survive long enough to reproduce • Adaptation becomes more common in next generation ...
7E - gcisd
... Types of Speciation Several models have been proposed to account for new species among sexually reproducing organisms: Allopatric speciation: Populations become geographically separated, each being subjected to different natural selection pressures, and finally establishing reproductive isolating m ...
... Types of Speciation Several models have been proposed to account for new species among sexually reproducing organisms: Allopatric speciation: Populations become geographically separated, each being subjected to different natural selection pressures, and finally establishing reproductive isolating m ...
Historic Context
... Reverend Thomas Malthus •(1766-1834) studied human overpopulation: 1. all species over-produce 2. competition for resources 3. only a fraction survive to reproduce 4. eventually populations reach carrying capacity ...
... Reverend Thomas Malthus •(1766-1834) studied human overpopulation: 1. all species over-produce 2. competition for resources 3. only a fraction survive to reproduce 4. eventually populations reach carrying capacity ...
program overview - Royal Tyrrell Museum
... I. Terminology Introduce these terms to your class prior to your program at the Royal Tyrrell Museum to ensure your students are comfortable with the information presented in the program. Adaptation: Adaptation is the evolutionary process whereby a population becomes better suited to its habitat. ...
... I. Terminology Introduce these terms to your class prior to your program at the Royal Tyrrell Museum to ensure your students are comfortable with the information presented in the program. Adaptation: Adaptation is the evolutionary process whereby a population becomes better suited to its habitat. ...
Chemistry of Life Review
... related monkey flower species? Explain your answer. Evolutionary Biology Review: History of Life on Earth 1. What hypothesis did Stanley Miller and Harold Urey test in their famous experiment? 2. How would the appearance of protobionts have represented a key step in the origin of life? 3. If scienti ...
... related monkey flower species? Explain your answer. Evolutionary Biology Review: History of Life on Earth 1. What hypothesis did Stanley Miller and Harold Urey test in their famous experiment? 2. How would the appearance of protobionts have represented a key step in the origin of life? 3. If scienti ...
Topic 5: Ecology and ecosystems
... 6. species tend to produce more offspring than the environment can support. 7. individuals that are better adapted tend to survive and produce more offspring while the less well adapted tend to die or produce fewer offspring. 8. individuals that reproduce pass on characteristics to their offspring. ...
... 6. species tend to produce more offspring than the environment can support. 7. individuals that are better adapted tend to survive and produce more offspring while the less well adapted tend to die or produce fewer offspring. 8. individuals that reproduce pass on characteristics to their offspring. ...
Topic 5: Ecology and ecosystems
... 6. species tend to produce more offspring than the environment can support. 7. individuals that are better adapted tend to survive and produce more offspring while the less well adapted tend to die or produce fewer offspring. 8. individuals that reproduce pass on characteristics to their offspring. ...
... 6. species tend to produce more offspring than the environment can support. 7. individuals that are better adapted tend to survive and produce more offspring while the less well adapted tend to die or produce fewer offspring. 8. individuals that reproduce pass on characteristics to their offspring. ...
Ch.13_Notes
... another barrier to reproduction Gradual change over a long period of time leads to species formation A model of evolution in which periods of rapid change in species are separated by periods with little or no change Scientist who studies fossils Structures, usually bones, are considered to be eviden ...
... another barrier to reproduction Gradual change over a long period of time leads to species formation A model of evolution in which periods of rapid change in species are separated by periods with little or no change Scientist who studies fossils Structures, usually bones, are considered to be eviden ...
EVOLUTION!
... PUNCTUATED EQUILIBRIUM agrees with Mutation Theory disputes Darwin’s gradualism-but not natural selection supports idea that evolution occurs in quick spurtsseen in fossil record all the time mutations accumulate over time and then a new species develops when there are too many differences ...
... PUNCTUATED EQUILIBRIUM agrees with Mutation Theory disputes Darwin’s gradualism-but not natural selection supports idea that evolution occurs in quick spurtsseen in fossil record all the time mutations accumulate over time and then a new species develops when there are too many differences ...
Ch 10 study guide
... 7. What is a species? Give an example of two organisms that are of the same species, and two that are not. 8. Why must a species make fertile offspring? 9. What was flawed about Lamark’s work? Give an example of a species that could be incorrectly described using his error. How would this creature r ...
... 7. What is a species? Give an example of two organisms that are of the same species, and two that are not. 8. Why must a species make fertile offspring? 9. What was flawed about Lamark’s work? Give an example of a species that could be incorrectly described using his error. How would this creature r ...
Evolution by Natural Selection
... Different breeds of pigeons have distinct traits that are present in their offspring – a breeder can selectively breed those pigeons to promote those traits This process of breeding desired traits is called artificial collection (also occurs with dogs or crops or livestock) Darwin inferred that if h ...
... Different breeds of pigeons have distinct traits that are present in their offspring – a breeder can selectively breed those pigeons to promote those traits This process of breeding desired traits is called artificial collection (also occurs with dogs or crops or livestock) Darwin inferred that if h ...
check
... ____ 34. What theory agrees with fossil records that show no intermediate forms for long periods of time? punctuated equilibria Essay 35. A horse and a donkey can mate with each other. Their offspring, called a mule, is not fertile. Do horses and donkeys belong to the same species? Explain your answ ...
... ____ 34. What theory agrees with fossil records that show no intermediate forms for long periods of time? punctuated equilibria Essay 35. A horse and a donkey can mate with each other. Their offspring, called a mule, is not fertile. Do horses and donkeys belong to the same species? Explain your answ ...
Natural Selection in Action
... If the two populations were to by chance meet again they would unlikely mate with each other due to the differences in their gene pools creating differences in the ...
... If the two populations were to by chance meet again they would unlikely mate with each other due to the differences in their gene pools creating differences in the ...
Nature of Science, Evolution, and Natural Selection Notes – CH1
... View VIDEO: The Origin of Species ( link at foleybio.wikispaces.com) Part 1: The Making of a Theory! (30minutes) 1852 - Alfred Russel Wallace – came up with Mechanism of Natural Selection independently, but after darwin – Lost majority of his research due to _________________________! (More info on ...
... View VIDEO: The Origin of Species ( link at foleybio.wikispaces.com) Part 1: The Making of a Theory! (30minutes) 1852 - Alfred Russel Wallace – came up with Mechanism of Natural Selection independently, but after darwin – Lost majority of his research due to _________________________! (More info on ...
EVOLUTION Biogenesis Define biogenesis. What is spontaneous
... What did Lamarck think had caused the webbed feet of water birds? ...
... What did Lamarck think had caused the webbed feet of water birds? ...
natural selection Examples of natural selection provide evidence of
... • When scientists study indirect evidence, such as the evidence of evolution found in fossils and living organisms, they must often make inferences, or educated guesses about the events that produced the evidence. • Often times, scientists cannot directly test their inferences through experimen ...
... • When scientists study indirect evidence, such as the evidence of evolution found in fossils and living organisms, they must often make inferences, or educated guesses about the events that produced the evidence. • Often times, scientists cannot directly test their inferences through experimen ...
ppt lecture
... shared evolutionary history to define species. Think of this as a distinct branch on an evolutionary tree. ...
... shared evolutionary history to define species. Think of this as a distinct branch on an evolutionary tree. ...
Unit 1: Evolution and viruses - Vet Trip
... uniformitarianism (mechanisms of change are constant over time) • Earth had to be much older than a few thousand years in order for uniformitarianism to explain current geological features of the planet. ...
... uniformitarianism (mechanisms of change are constant over time) • Earth had to be much older than a few thousand years in order for uniformitarianism to explain current geological features of the planet. ...
ap evolution review - Blue Valley Schools
... 1. You should be able to discuss pre-Darwinian biological and geological concepts, as well as the people that promoted these scientific concepts. 2. You should be able to discuss the empirical evidence that led to changes in our view of geological form and time. 3. You should be able to discuss the ...
... 1. You should be able to discuss pre-Darwinian biological and geological concepts, as well as the people that promoted these scientific concepts. 2. You should be able to discuss the empirical evidence that led to changes in our view of geological form and time. 3. You should be able to discuss the ...
Punctuated equilibrium
Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record they will become stable, showing little net evolutionary change for most of their geological history. This state is called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and geologically rapid events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another. Punctuated equilibrium is commonly contrasted against phyletic gradualism, the belief that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). In this view, evolution is seen as generally smooth and continuous.In 1972, paleontologists Niles Eldredge and Stephen Jay Gould published a landmark paper developing their theory and called it punctuated equilibria. Their paper built upon Ernst Mayr's model of geographic speciation, I. Michael Lerner's theories of developmental and genetic homeostasis, as well as their own empirical research. Eldredge and Gould proposed that the degree of gradualism commonly attributed to Charles Darwin is virtually nonexistent in the fossil record, and that stasis dominates the history of most fossil species.