Question

question 4 of 10
in carnations, the alleles for flower color exhibit incomplete dominance. red
flowers have the rr genotype. pink flowers have the rw genotype. white
flowers have the ww genotype.
if a red flower and a white flower are crossed, what is the expected genotypic
ratio of their offspring?
a. 2 rr:0 rw:2 ww
b. 3 rr:0 rw:1 ww
c. 1 rr:2 rw:1 ww
d. 0 rr:4 rw:0 ww

Explanation:

Step1: Determine the gametes

The red flower (RR) can only produce R gametes. The white flower (WW) can only produce W gametes.

Step2: Do the cross

Using a Punnett square:

	R	R
W	RW	RW

All of the offspring will have the RW genotype.

Answer:

D. 0 RR : 4 RW : 0 WW