Lecture 12 - BIO220

High fst for maternal markers low fst for paternal

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Unformatted text preview: oduced by matings. High Fst for maternal markers Low Fst for paternal and autosomal markers Migration Southern Southern Summer Winter Summer Summer Mating Season 25 Winter Summer Mating Season 26 -A Y chromosome from a Northern Male will go home with the S outhern mother that donated the mtDNA: Y from North goes S outh -Likewise, a Y chromosome from a Southern Male will go home w ith the Northern mother that donated the mtDNA: Y from S outh goes North -Any mating bet ween the N and S wolves: Babies ALWAYS go w ith the mom who donated the mtDNA -Therefore, over time, genetic differences will occur at the m tDNA locus -(No baby with mtDNA from the North will stay in the South w ith a mother that is not theirs, therefore no mtDNA mixing o ccurs) Influence of behavior & genetic system on differentiation Summary: Wolf Caribou ecological genetics 1. Patterns of differentiation depend on genetic system • Mitochondrial DNA is inherited maternally • Y chromosomes are inherited paternally • Autosomes are inherited biparentally 1. Seasonal variation leads to migration of caribou 2. Migration of caribou leads to migration of wolves and ecologically distinct populations of wolves (different habitats, prey, etc). 2. Behavior determines transmission of different types of markers • Pups migrate with the natal pack, bringing the mtDNA with them More genetic differentiation • Mating between wolf subpopulations mixes autosomes and Y chromosomes between subpopulations Less genetic differentiation 3. The wolf pop ns are genetically differentiated • Have the potential to evolve somewhat ind...
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This document was uploaded on 01/27/2014.

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