Question

question 2 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 two pink flowers are crossed, what is the expected genotypic ratio of their
offspring?
a. 0 rr: 4 rw: 0 ww
b. 2 rr: 0 rw: 2 ww
c. 3 rr: 0 rw: 1 ww
d. 1 rr: 2 rw: 1 ww

Explanation:

Step1: Determine the gametes

Each pink - flowered plant (RW) can produce two types of gametes: R and W.

Step2: Set up the Punnett square

	R	W
W	RW	WW

Step3: Count the genotypes

From the Punnett square, there is 1 RR, 2 RW, and 1 WW. So the genotypic ratio is 1 RR: 2 RW: 1 WW.

Answer:

D. 1 RR: 2 RW: 1 WW