Question

in a group of pea plants, some individuals have green pods and others have yellow pods. in this group, the gene for the pod color trait has two alleles. the allele for yellow pods (d) is recessive to the allele for green pods (d).
this punnett square shows a cross between two pea plants.

	d	d
d	dd	dd

what is the expected ratio of heterozygous to homozygous recessive offspring genotypes? choose the most likely ratio.

1:2 2:1 1:1

Explanation:

Step1: Identify target genotypes

Heterozygous: $Dd$; Homozygous recessive: $dd$

Step2: Count genotype occurrences

From Punnett square: $Dd$ appears 2 times, $dd$ appears 1 time.

Step3: Calculate the ratio

Ratio of $Dd$ to $dd$ is $2:1$

Answer:

2:1