In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible? (1 point)
If a plant has white flowers, then its genotype must be pp.
If a plant has purple flowers, then its genotype must be Pp.
If a plant has white flowers, then its genotype must be Pp.
If a plant has purple flowers, then its genotype must be PP.
If a plant has purple flowers, then its genotype must be PP.
The correct conclusion about the phenotype and genotype in pea plants is: If a plant has purple flowers, then its genotype must be Pp.
Based on the given information that the allele for purple flowers, P, is dominant over the allele for white flowers, p, we can determine the possible conclusions about phenotype and genotype.
1. If a plant has white flowers, then its genotype must be pp.
Explanation: Since the allele for white flowers is recessive (p), a plant displaying white flowers must have two copies of the recessive allele, resulting in a genotype of pp. This is the only logical conclusion for white flowered plants.
2. If a plant has purple flowers, then its genotype must be Pp.
Explanation: Since the allele for purple flowers is dominant (P), a plant displaying purple flowers could have one copy of the dominant allele (P) and one copy of the recessive allele (p), resulting in a genotype of Pp. This is the only logical conclusion for purple flowered plants.
Therefore, the correct conclusion is:
If a plant has white flowers, then its genotype must be pp.