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Related Flashcards
Cards In This Set
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In genetic terms, what indicates that evolution is occurring in a population?
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Any change in the relative frequency of alleles in a population.
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What two processes can lead to inherited variation in populations?
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Gene shuffling and Mutations
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How does the range of phenotypes differ between single-gene traits and polygenic traits?
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There are only 2 phenotypes in a single-gene trait because the trait is controlled by a single gene with 2 alles.
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What is a gene pool and how are alle frequencies related to gene pools?
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A gene pool is all genes present in a population, including all the different alleles.
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How does mutation affect genetic variation?
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It may affect an organisms fitness or ability to survive and reproduce in its environment.
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Any change in the relative frequency of alleles in a population is called
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Evolution
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A gene pool consist of all the genes in a(an)
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Population
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The two main sources of genetic variation are gene shuffling and ....
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Mutation
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A random change in allele frequency is called
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Genetic drift
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When birds cannot interbreed because they have different mating songs, they are characterized by ___________ isolation
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Reproductive isolation.
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A situation in which allele frequencies change as a result of the migration of a small subgroup of a population is known as the
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X
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Research of Galapagos finches by Peter and Rosemary Grant showed that a type of natural selection called ___________ selection was occurring.
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X
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Two related species that live in the same area but mate during different seasons are...
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X
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Mendel’s work on inheritance was published after Darwin’s lifetime. (true/false)
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False
(its importance just wasn't recognized during Darwin's lifetime)
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Which of two important factors was Darwin able to explain without an understanding of heredity?
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How heritable trist pass generation to generation and variation in hertiable traits.
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