Question

he table lists the traits for fruit color where allele R exhibits incomplete dominance over allele R′.
​
​ 23-3534496-1520419597306
​
​Heterozygous fruit have orange phenotypes. What percent of offspring are expected to have an orange phenotype if the parent plants are orange (RR′) and yellow (R′R′)?
A
25%
B
50%
C
75%
D
100%

Answer 1

B — 50%

Cross RR′ (orange) × R′R′ (yellow) gives gametes R and R′ from the first parent and only R′ from the second. Offspring genotypes: 50% RR′ (orange) and 50% R′R′ (yellow).