First the possible gametes of the two parents are aligned along two sides of a square.
Then the gametes are combined to show genotypes of potential zygotes
in the cells of the square.
- All the eggs of homozygous recessive (albino)
mother have the recessive allele (m).
- All the sperm of homozygous dominant (pigmented)
father have the dominant allele (M).
- All the offspring are heterozygous (Mm) in genotype, pigmented