Pea flowers may be purple or white. Pea seeds may be round or wrinkled. Purple is completely dominant to white, and round is completely dominant to wrinkled. If two dihybrid pea plants are crossed, what proportion of the offspring are expected to have purple flowers and round seeds?
Answer
a.
0
b.
1/16
c.
3/16
d.
9/16
e.
3/4

Question

Pea flowers may be purple or white. Pea seeds may be round or wrinkled. Purple is completely dominant to white, and round is completely dominant to wrinkled. If two dihybrid pea plants are crossed, what proportion of the offspring are expected to have purple flowers and round seeds?
Answer
	 a.	
 0
	 b.	
 1/16
	 c.	
 3/16
	 d.	
 9/16
	 e.	
 3/4

anonymous · Answer

Well, dihybrid means that both of these guys will be PpRr x PpRr? right?

abhisar · Answer

yes hybrid means heterozygous

abhisar · Answer

DiHybrid= Two Heterozygous

anonymous · Answer

so would it be 9/16?

abhisar · Answer

yep, the phenotypic ratio will be 9:3:3:1

abhisar · Answer

For both dominant i.e purple, round its 9/16

abhisar · Answer

For both recessive i.e white, wrinkled its 1/16

abhisar · Answer

purple, wrinkled = 3/16 = white, round