AP BIOLOGY

Detailed explanation-1: -Generally, the monohybrid cross is used to determine the dominance relationship between two alleles. The cross begins with the parental generation. One parent is homozygous for one allele, and the other parent is homozygous for the other allele. The offspring make up the first filial (F1) generation.

Detailed explanation-2: –A monohybrid cross is a cross made between two homozygous parent plants resulting in heterozygous F1 progeny. This cross gives the F2 phenotypic ratio as 3:1 and the genotypic ratio as 1:2:1.

Detailed explanation-3: -In the monohybrid cross, a testcross of a heterozygous individual resulted in a 1:1 ratio.

Detailed explanation-4: -For a monohybrid cross of two true-breeding parents, each parent contributes one type of allele. In this case, only one genotype is possible in the F1 offspring. All offspring are Yy and have yellow seeds.