Define Genotypes and Phenotypes Quick Check
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Question
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)
Responses
If a plant has white 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 .
If a plant has white 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 response is: If a plant has white flowers, then its genotype must be pp.
To determine the correct conclusion about phenotype and genotype in this case, we need to understand the concepts of genotypes and phenotypes.
Genotype refers to the specific combination of alleles (alternative versions of a gene) that an organism carries for a particular trait. In this case, we have two alleles, P and p, for flower color in pea plants.
Phenotype, on the other hand, refers to the observable characteristics or traits of an organism. It can be influenced by the interaction between the genotype and the environment. In this case, the observable characteristics are purple or white flowers.
Now, given 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.
If a plant has white flowers (which is the recessive trait), its genotype must be homozygous recessive (pp). So, the correct conclusion would be: If a plant has white flowers, then its genotype must be pp.
Conversely, if a plant has purple flowers (which is the dominant trait), it could have either a homozygous dominant (PP) or heterozygous (Pp) genotype. So, the correct conclusion would be: If a plant has purple flowers, then its genotype could be either PP or Pp.
Therefore, the answer is: If a plant has white flowers, then its genotype must be pp, and if a plant has purple flowers, then its genotype could be either PP or Pp.