Question

in pea plants round pods dominate wrinkled pods. what would be the phenotypes of the offspring from a cross of a heterozygous round pod crossed with a wrinkled pod?
○ 3 round: 1 wrinked
○ 4 round
○ 3 wrinkled : 1 round
○ 1 round: 1 wrinkled

Explanation:

Step1: Define alleles

Let \( R \) be the dominant allele (round pods) and \( r \) be the recessive allele (wrinkled pods). The heterozygous round pod has genotype \( Rr \), and the wrinkled pod (recessive) has genotype \( rr \).

Step2: Set up Punnett square

	\( R \)	\( r \)
\( r \)	\( Rr \)	\( rr \)

Step3: Determine phenotypes

• \( Rr \) (round) and \( rr \) (wrinkled). From the Punnett square, there are 2 \( Rr \) (round) and 2 \( rr \) (wrinkled), so the phenotypic ratio is \( 1:1 \) (round:wrinkled).

Answer:

1 round: 1 wrinkled