In a flowering plant species, red flower color is dominant over white flower color. What is the genotype of any white-flowering plant resulting from this species? options: (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 present on both homologous chromosomes

D A white allele is present on both homologous chromosomes

Explanation:

In diploid organisms, each gene is present in 2 copies, one on each homologous chromosome. These copies are called alleles, and they can produce different traits such as different flowering colors.

If the red allele is dominant, that means that when it is present, it will be expressed. If there are two copies of the red allele, the flowers will be read. If there is just one copy, the flowers will still be red.

Therefore, in order for the recessive white flower trait to be present, there has to be no copies of the red allele, and instead two copies of the white allele.