Question

a horticulturalist wants to produce geraniums with specific characteristics.
she knows that the trait of red flowers is governed by the allele r (rr and rr) and the trait of white flowers is governed by the allele r (rr).
the horticulturalist crosses two geraniums from the f1 generation.
look at the punnett square to see this cross

	r	r
r	rr	rr

which ratio of red-to-white flowering plants would she expect to see in the phenotypes of the f2 generation?

Explanation:

Step1: Identify red and white genotypes

Red flowers: \( RR, Rr \); White flowers: \( rr \).

Step2: Count F2 genotypes from Punnett square

Punnett square has \( RR, Rr, Rr, rr \). So red ( \( RR, Rr, Rr \)): 3, white ( \( rr \)): 1.

Step3: Determine the ratio

Ratio of red - to - white is \( 3:1 \).

Answer:

\( 3:1 \)