Question

In a flowering plants species, red flower color is dominant over white flower color. What is the genotype of any white-flowering plant resulting from this species?
A. Red and white alleles present on one chromosome
B. Red allele on one homologous chromosome and a white allele on the other chromosome
C. A red allele is present on both homologous chromosomes
D. A white allele is present on both homologous chromosomes​

Answer 1

Answer:

D

Explanation:

For a flower to exhibit a white color phenotype, it must carry 2 of the recessive alleles (white color). It cannot carry a dominant allele (red) because that would make the flower color red.