In a cross between two pea plants, one with round seeds (R) and one with wrinkle
Practice Questions
Q1
In a cross between two pea plants, one with round seeds (R) and one with wrinkled seeds (r), what is the phenotype of the F1 generation if round is dominant?
Round
Wrinkled
Both
Neither
Questions & Step-by-Step Solutions
In a cross between two pea plants, one with round seeds (R) and one with wrinkled seeds (r), what is the phenotype of the F1 generation if round is dominant?
Correct Answer: Round seeds
Step 1: Identify the traits of the parent pea plants. One plant has round seeds (R) and the other has wrinkled seeds (r).
Step 2: Understand that round seeds (R) are dominant over wrinkled seeds (r). This means that if a plant has at least one R, it will show the round seed trait.
Step 3: When these two plants are crossed, the offspring (F1 generation) will inherit one allele from each parent.
Step 4: The F1 generation will have the genotype Rr (one round seed allele and one wrinkled seed allele).
Step 5: Since round (R) is dominant, the phenotype of the F1 generation will be round seeds.
