BIO 434 Assignment 4
1. If a particular locus mutates from Z to z at a rate 3 x 10-6 and from z to Z at rate 6 x
10-8, what is the equilibrium allele frequency of Z in an infinitely large population, with
no selection or migration?
The frequency is given
1. Prove that the equilibrium allele frequency with heterozygote advantage (1-s:1:1-t) is
equal to t/(s+t).
p 2 w11 + pqw12
, and find the equilibrium by setting
p 2 w11 + 2 pqw12 + q 2 w 22
p' to p. The relative fitness of each genotypes are w11 = 1-s, w
MID-TERM BIOL 434/509: October 2014
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FINAL EXAM BIO 434: PREVIOUS YEAR
1. A population of Darwins finches in the Galpagos has been studied for a very long
time by Peter and Rosemary Grant from Princeton. They have marked every
OLD FINAL KEY BIOL 434
1. a. R= h2 S. h2 0.82, S = 9.96-9.42= 0.54, Therefore R = (0.82)(0.54) = 0.44.
Therefore the new mean is expected to be 9.42+0.44 = 9.86.
1b. The true value could be different for a number of reasons. The heritability is