Question

Having smooth seeds is a dominant trait. Having wrinkled seeds is a recessive trait. The offspring of two plants with wrinkled seeds will have

Answer 1

The offspring of two plants with wrinkled seeds will wrinkled seeds.

Step-by-step explanation:

Having the dominant trait of smooth seeds gives the S allele.

Having the recessive trait of wrinkled seeds gives the s allele.

Since allele S is dominant, offspring only need one S allele for the phenotype of smooth seeds. This means that if either parents has allele S, it is possible for the offspring to have smooth seeds. Since allele s is recessive, both parents need to pass down the s allele to the offspring. If neither parent has the dominant allele, then the S allele cannot be passed down. All possible combinations of alleles passed down by both parents result in wrinkled seeds.

s | s

s | s | s

s | s | s