Biology Notes - Chapter 23 Selective breeding is a...

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Chapter 23 Selective breeding is a Human-Driven Form of Natural Selection (pg 487-489) selective breeding refers to programs and procedures designed to modify traits in domesticated species. This practice called artificial selection is related to natural selection, while the primary difference between natural and artificial selection being how the parents are chosen. Natural selection is due to natural variation in reproductive success. While in artificial selection, the breeder chooses as parents those individuals that possess traits desirable to humans. For successful selective breeding, phenotypic variation much be related to differences in the alleles, different forms of a particular gene. Anatomical, Developmental, and Molecular Homologies (pg 491- 492) Anatomical Homologies- homology refers to fundamental similarity that occurs due to descent from a common ancestor. Similar skeletal patterns are termed homologous structures because they are considered to have originated from a common ancestor. While evolution has allowed these creatures to use
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This note was uploaded on 04/08/2008 for the course BISC 208 taught by Professor Cain during the Spring '08 term at University of Delaware.

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Biology Notes - Chapter 23 Selective breeding is a...

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