Lecture 11-Gene Flow

Lecture 11-Gene Flow - Lecture 11- Gene Flow Nature vs....

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Lecture 11- Gene Flow Nature vs. Nurture -Does two different species resemble one another because of gene flow, or because they live in the same place and do the same thing? Genes Flow -Gene flow is “the glue that binds species together” - Rattus norvegicus , the Norway rat looks the same everywhere; rats move around the world by way of ships, etc. Gene flow everywhere. -Given some help with transportation, many animals and plants from different places interbreed and produce fertile offspring -If the distance between species is too far for them to “commute”, they are a separate species -Some animals fly, such as Lasiurus cinerus , the hoary bat. It may spread its genes that way Mus musculus - the house mouse -A population of these mice living in one barn was studied -They found very limited gene flow reflecting the partitioning of the mice into two social groups -Mice from opposite sides of the barn did not interbreed More testing on mice studied 1) The spread of an introduced allele 2)
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Lecture 11-Gene Flow - Lecture 11- Gene Flow Nature vs....

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