When plants that are heterozygous for round seeds are crossed, what is the probability that the offspring will have wrinkled seeds?

A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent

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.

Answered by Anonymous | 2024-06-10

**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%.

Answered by jamuuj | 2024-06-11

The probability that the offspring will have wrinkled seeds when heterozygous round-seeded plants are crossed is 25%. This is calculated using a Punnett square, which shows a 3:1 ratio of round to wrinkled seeds. Therefore, the correct answer is A: 25 percent.
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Answered by jamuuj | 2024-08-20