Question:
A tall pea plant with round seeds (TTRR) is crossed with a short pea plant with wrinkled seeds (ttrr). The F1 generation will be:
A tall pea plant with round seeds (TTRR) is crossed with a short pea plant with wrinkled seeds (ttrr). The F1 generation will be:
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In genetic crosses, the dominant trait is always expressed in the offspring if at least one dominant allele is present.
Updated On: Feb 6, 2026
- 25% tall with round seeds
- 50% tall with wrinkled seeds
- 75% tall with wrinkled seeds
100% tall with round seeds
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The Correct Option is D
Solution and Explanation
Step 1: Identifying the traits. - Tall (T) is dominant to short (t), and round (R) is dominant to wrinkled (r).
- The parental genotypes are TTRR (tall, round) and ttrr (short, wrinkled).
Step 2: Analyzing the F1 generation. - The F1 generation will inherit one allele from each parent.
- All F1 plants will have the genotype TtRr, making them heterozygous for both traits.
Step 3: Conclusion. Since tall (T) and round (R) are both dominant, all F1 plants will be tall with round seeds.
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