If a round, green seeded pea plant (RR yy) is crossed with a wrinkled, yellow seeded pea plant (rr YY), the seeds produced in the F1 generation are (a) round and yellow.
Explanation:
Round (R) is dominant over wrinkled (r):
This means that even though the parent plant has the rr genotype for wrinkled seeds, all offspring in the F1 generation will have the round phenotype.
Yellow (Y) is dominant over green (y):
Similarly, yellow is the dominant color, so all F1 offspring will be yellow.
Why other options are incorrect:
(b) round and green:
While round is dominant, the green allele is recessive to yellow. Therefore, all F1 offspring will be round and yellow.
(c) wrinkled and green:
Both round and yellow are dominant traits, so the F1 generation will not exhibit wrinkled or green phenotypes.
(d) wrinkled and yellow:
Wrinkled is recessive to round, and green is recessive to yellow. Therefore, the F1 generation cannot be wrinkled and yellow.