Question

a student crosses two homozygous plants, one with green pods and the other with yellow pods. if yellow is dominant over green, what phenotypic results will the student find in the offspring?

a. 100% green

b. 75% green, 25% yellow

c. 75% yellow, 25% green

d. 100% yellow

Explanation:

1. Let the allele for yellow pods be \( Y \) (dominant) and for green pods be \( y \) (recessive).
2. The homozygous yellow - podded plant has the genotype \( YY \), and the homozygous green - podded plant has the genotype \( yy \).
3. When we cross \( YY\times yy \), all the offspring will have the genotype \( Yy \).
4. Since yellow (\( Y \)) is dominant over green (\( y \)), the phenotype of \( Yy \) is yellow. So all (100%) of the offspring will have yellow pods.

Answer:

D. 100% yellow