Question

In Mendel's peas, purple flower color is dominant to white. From which of the following descriptions can you NOT infer the genotype at this locus completely?

a) Two purple-flowered parents have white-flowered offspring.
b) Two white-flowered parents have only white-flowered offspring.
c) A purple-flowered parent has both purple and white-flowered offspring.
d) Two purple-flowered parents have only purple-flowered offspring.

Answer 1

The genotype at the flower color locus in Mendel's peas cannot be completely inferred from two purple-flowered parents having white-flowered offspring.

Step-by-step explanation:

The genotype at the locus for flower color in Mendel's peas cannot be completely inferred from description a)Two purple-flowered parents having white-flowered offspring. This is because the parents could have the genotype Bb and produce white-flowered offspring when both b alleles are inherited by the offspring.