In pea plants, Mendel found that the allele for smooth seeds (S) is dominant, while the allele for wrinkled seeds (s) is recessive. Which Punnett square shows crosses between plants heterozygous for smooth seeds and homozygous recessive for wrinkled seeds?

a.

s s

s ss ss

s ss ss

b.

S s

S SS Ss

s Ss ss

c. S s

s Ss ss

s Ss ss

d.

S S

S SS SS

s Ss Ss

Question

Bitsy

Biology

22 July, 05:49

In pea plants, Mendel found that the allele for smooth seeds (S) is dominant, while the allele for wrinkled seeds (s) is recessive. Which Punnett square shows crosses between plants heterozygous for smooth seeds and homozygous recessive for wrinkled seeds?

a.

s s

s ss ss

s ss ss

b.

S s

S SS Ss

s Ss ss

c. S s

s Ss ss

s Ss ss

d.

S S

S SS SS

s Ss Ss

+2

Answers (2)

Know the Answer?

Kyra Pope · Answer 1

S s

s Ss ss

s Ss ss

Selena Green · Answer 2

C

Homozygus means the same. In this case, it is a recessive trait so there will be two little s.

Heterozygus means different. There is one S and one s.

when you cross them, you will have Ss ss Ss ss.