Answer :
A. 25 percent.
Assuming wrinkled seeds are recessive.
The ratio for two heterozygous crosses for one trait will stay the same-- 3:1, with 1 being recessive.
Answer;
25 percent.
When plants that are heterozygous for round seeds are crossed, the probability
that the offspring will have wrinkled seeds will be 25 percent.
Explanation;
The trait round seed is dominant over the trait of wrinkled seed; which means the round seeds masks the wrinkled seed trait in heterozygous.
Therefore; the genotype of heterozygous round seeds will be Rr and the genotype for wrinkled seeds will be rr.
Thus; crossing heterozygous round seeds; Rr × Rr , the possible offsprings will be; RR, Rr, Rr, rr.
The probability of getting wrinkled seeds is thus 1/4 or 25%.
