Question

what would be the phenotype possibilities for the offspring of a cross between these pea plant parents:
rr
round
rr
round
0% round; 100% wrinkled
100% round; 0% wrinkled
50% round; 50% wrinkled
75% round; 25% wrinkled

Explanation:

Step1: Analyze Parent Genotypes

Parent 1: \( RR \) (homozygous dominant, round phenotype).
Parent 2: \( Rr \) (heterozygous, round phenotype, since \( R \) is dominant over \( r \)).

Step2: Determine Gametes

Parent 1 (\( RR \)) can only produce \( R \) gametes.
Parent 2 (\( Rr \)) can produce \( R \) or \( r \) gametes.

Step3: Punnett Square Cross

	\( R \) (from Parent 1)	\( R \) (from Parent 1)
\( r \) (from Parent 2)	\( Rr \) (round)	\( Rr \) (round)

All offspring genotypes (\( RR \) or \( Rr \)) express the dominant (round) phenotype. Thus, 100% round, 0% wrinkled.

Answer:

100% round; 0% wrinkled