Question

question 1 1 pts
r = right handed r = left handed
a right handed male (heterozygous) plans to have children with a right handed (heterozygous) female. what are the possibilities for their offspring?
what proportion of their possible children will be right handed?
1 of 4
2 of 4
3 of 4
all of them
none of them

Explanation:

Step1: Set up Punnett - square

The male has genotype Rr and the female has genotype Rr. The possible gametes from each parent are R and r.

Step2: Fill in Punnett - square

	R	r
r	Rr	rr

Step3: Determine phenotypes

RR and Rr result in right - handed offspring, while rr results in left - handed offspring. There are 3 combinations (RR, Rr, Rr) out of 4 that are right - handed.

Answer:

C. 3 of 4