Question

In a certain plant species, the allele for wrinkled seeds (W) is dominant to the allele for smooth seeds. What is the phenotype result of a cross between a true-breeding wrinkle-seeded group of plants and a true-breeding smooth-seeded group of plants? A. all smooth seeds, no wrinkled seeds B. 1/4 smooth seeds, 3/4 wrinkled seeds C. all wrinkled seeds, no smooth seeds D. 1/4 wrinkled seeds, 3/4 smooth seeds

Answer 1

It would be C.

Using a punnett square, who get the following genotypes:

Ww
Ww
Ww
Ww

Since W is for wrinkled seeds, and is dominant, all the seeds would have the wrinkled seed phenotype.