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A nectarine is a peach without the fuzz. The difference is con- trolled by a single gene that is found in two alleles, D and d. At the molecular level, do you think that the nectarine is homozygous for a recessive allele or that the peach is homozygous for the recessive allele? Explain your reasoning. C5.
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Yes, nectarine is homozygous for recessive gene(dd). Actually peach and nectarine share maximum trait at molecular or genetic level . Nectarine is peach without fuzz and at molecular level these alleles are associated with G locus when single allele of D with homozygous dominant or D with heterozygous gives fuzzy skin on peach fruits but in nectarine this D allele is in homozygous recessive form i.e. I. dd form.

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