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the population (Y) – Use genetic markers to understand the evolutionary process
– Use data about behavior and ecology to understand patterns
in genetic data • Areas of low recombination will be inherited as a unit,
while recombination will break up areas of high
recombination to be inherited independently
7 8 -We can take advantage of our knowledge about how genes are
t ransmitted in order to help us understand history 2 25/02/2013 Observations: Elephants have a fluid social system Question: Do male elephants avoid inbreeding? • Females often live with their natal group, with 2 20 maternal kin. These groups are
composed of females and juveniles. • Hypothesis 1: Yes, male elephants have evolved inbreeding avoidance
because inbreeding depression is severe • Males leave their natal groups at adolescence, but do not join other social groups.
• Males are attracted to females in estrous, and can be seen with their natal group. • Hypothesis 2: Selection has not led to inbreeding avoidance because
inbreeding depression is weak and/or male reproductive success is so
highly variable • Male reproductive lifespan is long, and many males are still reproductive when their
daughters mature. Female elephant kin group Female elephant kin group Male elephants fighting Male elephants fighting 9 -Males are booted out! They are only attracted to women in
-Can they avoid mating with their sisters/mom?
-Elephants reproduce for a long time, they must be able to avoid
m ating daughters once they mature (the fathers will still be at
m ating age by the time their own daughters reac...
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