Question

18.

(Problem 28b) The human MN blood type is determined by two codominant alleles, L^M and L^N. The frequency of L^M in Eskimos on a small Arctic island is 0.80. If the inbreeding coefficient for this population is 0.05, what are the expected frequencies of the M, MN, and N blood types on the island?

f(MM) = 0.64, f(MN) = 0.304, f(NN) = 0.04

f(MM) = 0.64, f(MN) = 0.32, f(NN) = 0.04

f(MM) = 0.648, f(MN) = 0.048, f(NN) = 0.304

f(MM) = 0.648, f(MN) = 0.304, f(NN) = 0.048

f(MM) = 0.048, f(MN) = 0.304, f(NN) = 0.648

20.

(Problem 12, part 3) Briefly describe underdominance.

	The heterozygote has lower fitness than either homozygote.
	The heterozygote has greater fitness than either homozygote.
	All alleles have equal fitness.
	One allele has greater fitness than another.
	The selection coefficients are all zero.