[BIO220H1] - Final Exam Guide - Ultimate 110 pages long Study Guide!

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30 Mar 2017
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BIO220H1 Full Course Notes
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BIO220H1 Full Course Notes
Verified Note
38 documents

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Inheritance ensures transmission of information across generations. High recombination & crossing over in gametes will have different effects on genes on chromosomes. In region of low recombination = genes are inherited together. But in high recombination region = the genes can be inherited independently because of crossing over which it can dissociated from its neighboring gene. There are different modes on transmission and inheritance. Bi-parental genome can infer the contributions of each parents. Fluid social system in elephants: estrous receptive in their reproductive cycle phase. Elephants are attracted to the females in that phase. Hypothesis: elephants evolved inbreeding depression avoidance, elephants did not evolve inbreeding avoidance because inbreeding depression is weak and male reproductive success is highly variable. Elephants gestation period is 22 months and their lifespan is 62 years, therefore direct measuring of inbreeding depression is impossible. Litmus test: observe behavior, asses if behaviors are directed away from kin.