Answer:
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.
