The allele frequency represents the incidence of a gene variant in a population. Alleles are variant forms of a gene that are located at the same position, or genetic locus, on a chromosome.

A gene is a location on a chromosome where there is a ... chromosome passed on by the female gamete. 1 Homozygous for allele r rr Wrinkled 2 Homozygous for allele R RR Round Plants 2 and 3 both ...