ANTH222 Lecture Notes - Large Ground Finch, Speciation
Document Summary
Hybrids are adapted to intermediate niches, normally there is none in nature. Reinforcement when hybrid is adapted to in between parent"s niches, and that intermediate niche doesn"t exist. If a large ground finch has a certain mutation that makes it attracted to medium ground finches it will mate with only medium finches. Their hybrid offspring will also have that attraction mutation. If the hybrid isn"t viable/has no niche, the gene for the attraction mutation will die off as well as the hybrid. There is natural selection against hybrids/ most hybrids aren"t viable or a strong. Species (aka no one wants to mate with them, they don"t fit anywhere in the environment) Who is more closely related to whom? (closest common ancestry) Analogous traits traits shared by convergent evolution, two species share the same trait that were developed independently and not ancestrally shared (do not use these to figure out phylogeny order)
