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Profile Documents Logout
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Notes
Notes

... •Adaptive radiation/divergent evolution – 2 or more related species become unalike as they adapt to different environments •Ex: various species of finches on Galapagos ...
Biodiversity
Biodiversity

...  Mutation is the occasional mistake in the copying process that produces a random ...
Notes
Notes

... •Adaptive radiation/divergent evolution – 2 or more related species become unalike as they adapt to different environments •Ex: various species of finches on Galapagos ...
Evolution PPT - Liberty Union High School District
Evolution PPT - Liberty Union High School District

...  Darwin referred to such change as “descent with modification” – evolution;  Wrote Origin of Species  He still wondered “How does evolution occur?” ...
History of Life on Earth
History of Life on Earth

... Homologous structures share a common ancestry, but they exist on two different organisms. Evolutionary history seen in embryo development ...
evolution
evolution

... Individual organisms do not evolve. Only populations can evolve. • “The organism could not adapt and it went extinct.” Individual organisms die; they cannot go extinct. Only species can become extinct. • “The bacteria became resistant to antibiotics when they were exposed to them” To evolve, variat ...
Figure 22.0 Title page from The Origin of Species
Figure 22.0 Title page from The Origin of Species

... branches representing life’s diversity ...
AP Biology - Evolution Review Key Terms
AP Biology - Evolution Review Key Terms

... How do we know all organisms evolved from a common ancestor? Bird wings and bat wings are an example of what idea? Bird wings and dragonfly wings are an example of what idea? If species 1 and 2 have similar appearances but different DNA sequences while species 3 and 4 have different appearances but ...
Evolution Reading questions from EOCT study Guide
Evolution Reading questions from EOCT study Guide

... 2-Explain the History of Life in Terms of Biodiversity, Ancestry, and the Rates of Evolution 9. What is adaptive radiation? Give an example. 10. What is convergent evolution? Give an example. 11. Why was myosin so interesting to evolutionary biologist? What did it show? 12. What is Biodiversity? 13. ...
Mechanisms of Evolution: Natural Selection
Mechanisms of Evolution: Natural Selection

...  An adaptation is a feature that is common in a population because it provides some improved function. Adaptations are well fitted to their function and produced by natural selection.  Remember, individuals do not form adaptations!!  Adaptations are the result of natural selection. The most suita ...
Natural Selection
Natural Selection

... -evolution is a change in the genetic make-up of a population over time -Some genes are more successful (cause org. to survive & reproduce better) -Gene pool: -Allelic frequency: % of a specific allele in the gene pool -Genetic equilibrium: -mutations cause new genes/alleles/phenotypes to appear in ...
Mechanism of Natural Selection
Mechanism of Natural Selection

... disruptive selections (include drawings) ...
PowerPoint file
PowerPoint file

...  domesticated plants and animals can be bred to favor certain characteristics  populations of wild and domestic plants and animals develop characteristics that favor their survival ...
Mechanisms of Evolution
Mechanisms of Evolution

... Allele frequencies will stay the same from generation to generation IF: • There are no mutations ...
suited to the environment
suited to the environment

... needed to replace the adults which die. 
Darwin decided that some creatures or plants struggle to survive. Many things affect an individual's chances of survival, including its ability to get enough food and to escape being killed by others. He also realised that individuals in a particular group or ...
Natural selection
Natural selection

... Natural Selection is currently the best theory scientists have to explain the vast diversity of life on Earth and how populations change over time. In science, nothing can ever be proven as fact, there are no facts in science, only “best guesses”. These best guesses are based on current, verifiable ...
Evolution 2007b
Evolution 2007b

... giraffes that strained to reach higher branches would grow longer necks Fiddler crabs large claw (male) developed one larger front claw because it used to claw often to attract mates and ward off predators ...
Mechanisms of Evolution
Mechanisms of Evolution

...  An adaptation is a feature that is common in a population because it provides some improved function. Adaptations are well fitted to their function and produced by natural selection.  Remember, individuals do not form adaptations!!  Adaptations are the result of natural selection. The most suita ...
Evolution
Evolution

... gray skin. The color of both snakes helps them blend in with their habitat. Snakes that have an intermediate color would be obvious to predators. Sexual selection occurs when certain traits are inherited because they increase the chance of attracting a mate. This type of selection is often found in ...
Ch.13_Notes
Ch.13_Notes

... Who was Charles Darwin and around what time did he live? o A British naturalist; around the middle of the 19h century What did most people in Darwin’s time believe about the creation of species? o That god put all species into the world and they exist unchanging Why was Darwin afraid to share his id ...
Lectures 1-7 (word format)
Lectures 1-7 (word format)

... ▼ numerous observations - Galapagos • recent volcanic origin • most species were unique • most were similar to species in South America • finches showed diversity based on different islands and different habitats ...
Natural Selection
Natural Selection

... unable to reproduce for long periods of time with another population of the same animal? ...
File
File

... variation among individuals Phenotype = physical and behavioral characteristics Examples – traits that show phenotypic variation: ...
THE THEORY OF EVOLUTION
THE THEORY OF EVOLUTION

... 10) Homologous Structures = Similarities in structure and arrangement—likeness indicates a genetic relationship through a common ancestor 11) Vestigial structure = any body structure that is reduced in function in a living organism but may have been used in an ancestor 12) Microevolution = evolution ...
BIOH_CGE_Evolution_V01
BIOH_CGE_Evolution_V01

... Identify characteristics that all primates share, including: grasping hands, binocular vision, and enlarged cerebrum. Describe major evolutionary groups of primates, including: Lemurs & Lorises, along with Tarsiers and Anthropoids. Describe adaptations that allowed later hominid species to walk upri ...
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Speciation



Speciation is the evolutionary process by which new biological species arise. The biologist Orator F. Cook was the first to coin the term 'speciation' for the splitting of lineages or ""cladogenesis,"" as opposed to ""anagenesis"" or ""phyletic evolution"" occurring within lineages. Charles Darwin was the first to describe the role of natural selection in speciation. There is research comparing the intensity of sexual selection in different clades with their number of species.There are four geographic modes of speciation in nature, based on the extent to which speciating populations are isolated from one another: allopatric, peripatric, parapatric, and sympatric. Speciation may also be induced artificially, through animal husbandry, agriculture, or laboratory experiments. Whether genetic drift is a minor or major contributor to speciation is the subject matter of much ongoing discussion.
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