Question

In the case of multiple allelism, factors are present:

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

Answer 1

The correct option is A On same locus of the pair of chromosomes

Alleles are defined as two or more alternative forms of the same gene located on the same loci on a pair of homologous chromosomes. Each individual inherits one allele from either parent.
In multiple allelism, there are more than two forms of the same gene in the population; however individuals possess only two alleles, which are located on the same locus of a pair of homologous chromosomes.