1. A survey is made of 4 allozyme loci in a particular population. The alleles are labeled alphabetically according to the mobility of their products in electrophoresis (from fast to slow). A sample of 250 individuals gave the following results:
Locus Genotype
A/A A/B B/B A/C B/C C/C A/D B/D
Adh 18 107 125 - - - - -
Mdh 114 75 10 12 30 - 7 2
Est-A 10 70 120 11 35 4 - -
Pgm 250 - - - - - - -
a) Calculate the gene frequencies at each gene locus.
b) For each locus, what would be the expected genotype numbers given Hardy- Weinberg ratios?
c) Calculate the "% polymophic loci" and "average (expected) individual heterozygosity" from this sample.