Question

Multiple alleles are present

• A. At the same locus of the chromosome
• B. On non-sister chromatids
• C. On different chromatids
• D. At different loci on the same chromosome

Answer 1

Answer: (A)

At the same locus of the chromosome

Multiple alleles refer to the presence of more than two alternate forms of a gene which should be accommodated on two loci on a homologous pair. This is facilitated by the presence of more than one allele on the same locus of a chromosome provided one allele is present at a locus at a time. Thus, the correct answer is option A.