This is a pair of chromosomes having the same genes at the same loci; these chromosome pairs can have homozygous or heterozygous alleles is called ?

A) Homologous chromosome pair

B) Allele pair

Explanation:

A) A chromosome pair that consists of same genes and that too at the same locus is called as a homologous chromosome pair. The homologous chromosome has identical alleles for a gene of a particular trait and based on that it can be dominant or recessive.

B) An allele pair however can be either homozygous dominant or recessive(RR or rr) or heterozygous (Rr)