Question

What is a pair of genes called?

Answer 1

Each person is born with two copies of genes, one from each parent. The majority of genes are equivalent in all individuals, although a small number of genes deviate slightly. Alleles are copies of the same gene with minor changes in DNA base sequence. These minor differences lead to the distinctiveness of each person's physical appearance.

Complete answer:
A variable version of a gene is known as an allele. Some genes exist in several distinct versions, all of which are found at the same genetic locus on a chromosome. Humans are referred to as diploid organisms because they possess two alleles at each genetic locus, one from each parent. The genotype of a gene is expressed by each pair of alleles.
If there are two similar alleles at a locus, the genotype is homozygous, and if the two alleles mismatch, the genotype is heterozygous. Alleles play a role in the phenotype of an organism, which is the physical features.
Alleles can either be recessive or dominant. The dominant phenotype is expressed when an organism is heterozygous at a certain location and has one dominant and one recessive allele. Alleles can also indicate to minuscule DNA sequence changes amongst alleles that do
not impact the phenotype of the gene.

Note:
An allele is one of two or more variants of a gene found on the same chromosome. The genotype of an organism is the array of alleles that it inherits. All genetic characteristics are the product of allele combinations. Humans have coupled homologous chromosomes with two subunits known as alleles for every gene in their somatic cells.