If there are eight alleles at a locus F1 How many homozygous

If there are eight alleles at a locus,
F1. How many homozygous combinations are possible? F2. How many heterozygous combinations?

Solution

If the eight alleles at F1 are: ABCDEFGH and abcdefgh there would be - 16 homozygous combinations possible. Eight of which are dominant and eight are recessive.

AA, BB, CC, DD, EE, FF, GG, HH- These are the dominant alleles

aa bb, cc dd ee ff gg hh - These are the recessive alleles

Whereas there can be only 8 alleles in heterozygous combination.

Aa Bb Cc Dd Ee Ff Gg Hh