136k views
3 votes
Exam Instructions

Question 2 of 20:
Select the best answer for the question.
2. Two pea plants with yellow peas are crossed. Most of their offspring have yellow peas, but about 25 percent
you about the two parent plants?
O A. The parent plants have only dominant alleles for pea color.
O B. The parent plants are homozygous for pea color.
O C. The parent plants are heterozygous for pea color.
O D. Pea color follows an incomplete dominance pattern of inheritance.
Mark for review (Will be highlighted on the review page)
<< Previous Question
Next Question >>

1 Answer

7 votes

Final answer:

The parent plants are heterozygous for pea color.


Step-by-step explanation:

The best answer for this question is option C. The parent plants are heterozygous for pea color. Heterozygous means that the parent plants have different alleles for pea color: one dominant allele and one recessive allele. In this case, the dominant allele determines the yellow pea color while the recessive allele determines the green pea color. Since most of the offspring have yellow peas, it can be inferred that the dominant yellow allele is more common in the cross.


Learn more about Punnett Square

User Nektobit
by
7.4k points