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Unformatted text preview: ependently 27 3. An organism s genome will be a mosaic of relatedness &
Between different individuals & populations
28 -mtDNA has an opportunity to develop differently because it
- Y mixes, therefore it does not have the potential to evolve
i ndependently 7 25/02/2013 Does this apply to human populations? Fst 1
Differences • Human marriage customs yield 2 cultural trends
– Patrilocality: Females move to the location of their male
– Matrilocality: Males move to the locations of their female
spouse Genetic Differentiation Predictions:
(females move, males stay) Matrilocality
(males move, females stay) Y chrom variation within
populations Lower Higher Y chrom differentiation
between populations Higher Lower mtDNA variation within
populations Higher Lower mtDNA differentiation
between populations Lower Higher Fst 0
29 Patrilocality: Females move. Males stay
-Y variation will be SMALL within, LARGE bet ween
-mT will be HIGH within, small bet ween popln's Seielstad, M.T., E. Minch, and L.L. Cavalli Sforza. 1998.
Genetic evidence for a higher female migration rate in humans. Nature Genetics 20, 278 280 (1998) 30 -Y: Shows a lot of variation over distances. Evidence of female
-The males are staying in 1 location keeping their Y chromosomes
i n 1 location. Therefore, from location to location, there will be
g reat differences in Y chromosome variation M atrilocality: Males move. Females stay
-mtDNA variation will be low within, LARGE bet ween
-Y variation will be high within, low in bet ween popln's Can we use the reverse to prove t...
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This document was uploaded on 01/27/2014.
- Winter '14
- Annotated Lecture S