Pergunta

A pea plant that has round seeds has the genotype Rr. It is crossed with a pea plant that has wrinkled seeds and genotype rr. What is the probability that the offspring will have wrinkled seeds? 0 percent 25 percent 50 percent 75 percent
Solução

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Beatriz MariaElite · Tutor por 8 anos
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To determine the probability that the offspring will have wrinkled seeds, we need to consider the genotypes of the parent plants and use a Punnett square to visualize the possible genetic combinations of the offspring.<br /><br />Given:<br />- The first parent plant has round seeds and the genotype Rr.<br />- The second parent plant has wrinkled seeds and the genotype rr.<br /><br />We can set up a Punnett square to show the possible combinations of alleles from each parent:<br /><br />```<br /> R r<br /> +------+------+<br />r | Rr | rr |<br /> +------+------+<br />r | Rr | rr |<br /> +------+------+<br />```<br /><br />From the Punnett square, we can see that there are two possible genotypes for the offspring:<br />- Rr (round seeds)<br />- rr (wrinkled seeds)<br /><br />There are two Rr combinations and two rr combinations, making a total of four possible outcomes.<br /><br />Now, we need to determine the probability of each genotype:<br />- Probability of Rr (round seeds) = 2 out of 4 = 50%<br />- Probability of rr (wrinkled seeds) = 2 out of 4 = 50%<br /><br />Therefore, the probability that the offspring will have wrinkled seeds is 50 percent.
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