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Bisc 104 test 2 terms 2

Bisc 104 test 2 terms 2 - Chapter 13 Adaptation a change in...

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Chapter 13 Adaptation a change in the nucleotide sequence of DNA Allele- an alternative form of a gene. Biogeography the biographical distribution of species. Bottleneck effect genetic drift resulting from a drastic reduction in population size Charles Darwin born in 1809 born in doctor’s family; never worked. his earliest interest was hunting. Cambridge- ministry Interested in beetles at Cambridge After one year, was recommended as naturalist for board. Captain Fitzgerald wanted someone to talk to and to pay his way on a voyage. Explored the world on the HMS Beagle and collected thousands of specimens. Comparative Anatomy
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the study of body structures in different organisms. Comparative Embryology the study of the formation, early growth, and development of different organisms. Directional Selection natural selection that acts in favor of the individuals at one end of a phenotypic range. Diversifying Selection natural selection that favors extreme over intermediate phenotypes. Dominant Allele in a heterozygote, the allele that determines the phenotype with respect to a particular gene. Evolution genetic change in a population or species over generations. Fossils a preserved remnant or impression of an organism that lived in the past. Founder Effect random change in the gene pool that occurs in a small colony of a population. Galapagos Islands- Galapagos Finch Beaks- Gene Flow the gain or loss of alleles from a population by the movement of individuals or gametes into or out of the population.
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Gene Pool all the genes in a population at any one time.
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