BIOB51H3 Lecture Notes - Lecture 13: Depauperate Ecosystem, 6 Years, Mutational Meltdown
23 Feb 2017
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Document Summary
The hominin moved from africa when the climate change while following the prey. Migration is also called gene flow because the gene move into the new population and interbreed. In mammals it is mostly males that move. Migration from small to large pop, will not cause a big allele difference in the bigger pop and vice versa. Dispersal to islands occurred later in history compare to continents. Water snake example: some have banding pattern while other don"t recessive) . banded snakes p*1 = (1-m)p1 +mp have higher fitness as they have better cypris especially important for juveniles. In mainland"s most of the snakes are banded while on islands most of them are unbanded. banding is being maintained in some of the islands even with a cost because of migration. Stickleback fish: the ones live in stream and larger body than the ones living in lakes to resist water pressure.
