two plants are heterozygous for seed shape and have round seeds. if the two plants are crossed, what is the…

two plants are heterozygous for seed shape and have round seeds. if the two plants are crossed, what is the probability that the offspring will have wrinkled seeds? 25 percent 50 percent 75 percent 100 percent

two plants are heterozygous for seed shape and have round seeds. if the two plants are crossed, what is the probability that the offspring will have wrinkled seeds? 25 percent 50 percent 75 percent 100 percent

Answer

Explanation:

Step1: Define alleles

Let R represent the dominant allele for round - shaped seeds and r represent the recessive allele for wrinkled - shaped seeds. Heterozygous plants have the genotype Rr.

Step2: Set up Punnett - square

When two Rr plants are crossed, the possible gametes from each parent are R and r. The Punnett - square has 4 boxes. The possible combinations are: RR, Rr, Rr, and rr.

Step3: Calculate probability

Out of the 4 possible genotypes in the offspring (RR:Rr:Rr:rr), only 1 has the genotype rr (which gives wrinkled seeds). So the probability of getting an offspring with wrinkled seeds (rr) is $\frac{1}{4}$ or 25%.

Answer:

25 percent