Population Genetics

Question 1

Polymorphism

Answer 1

When there is more than one allele with a significant frequency (Most frequent is less than 99% for humans)

Question 2

Hardy-Weinberg for Three Alleles

Answer 2

(A+B+C)^2 = A^2 + 2AB + B^2 + 2AC + 2BC + C^2

Question 3

Directional Selection

Answer 3

The favored allele eventually fixed in the population

Question 4

Balancing Selection

Answer 4

All alleles remain in population at equilibrium frequencies

Question 5

Disruptive Selection

Answer 5

Either allele could be fixed (Equivalent to underdominance or heterozygote inferiority)