Question

question 28 of 49
in pea plants, the allele for round seed shape, r, is completely dominant to the allele for wrinkled seed shape, r. complete the punnett square showing the genotypes possible among the offspring when two heterozygous individuals are crossed. use the information from the punnett square to answer the second question.

in this cross between two heterozygous pea plants, what are the chances that an offspring with wrinkled seeds will be produced?
1%
25%
50%
75%

Explanation:

Step1: Determine parent genotypes

The parents are heterozygous, so their genotypes are \(Rr\).

Step2: Create Punnett square

	\(R\)	\(r\)
\(r\)	\(Rr\)	\(rr\)

Step3: Analyze offspring genotypes

There are 4 possible genotypes (\(RR\), \(Rr\), \(Rr\), \(rr\)). The genotype for wrinkled seeds is \(rr\).

Step4: Calculate probability

The probability of \(rr\) is \(\frac{1}{4}= 25\%\)

Answer:

B. 25%