When crossing the curled and smooth-haired guinea pigs, the offspring were obtained: 2 smooth-haired

When crossing the curled and smooth-haired guinea pigs, the offspring were obtained: 2 smooth-haired guinea pigs and 3 curled guinea pigs. It is known that smoothness is the dominant feature. What are the genotypes of the parents.

The splitting is approximately 1: 1, which is observed when crossing an individual homozygous for a recessive trait and a heterozygous individual.

A – gene for smooth-haired, and – gene for vortex. Accordingly, the swirling parent has the aa genotype, the smooth-haired one has the Aa genotype.

R: Aa x aa – parental individuals;

G: A, a x aa – possible gametes:

F: Aa – 50% smooth-haired;

aa – 50% swirling.