NEET BIOLOGY

Detailed explanation-1: -Locus is a term that we use to tell us where on a chromosome a specific gene is. So it’s really the physical location of a gene on a chromosome.

Detailed explanation-2: -Each allele occupies a specific region on the chromosome called a gene locus. The gene’s two alleles are located in the same region in two homologous chromosomes, one inherited from each parent. The alleles may be dominant or recessive.

Detailed explanation-3: -Alleles are variants of the same gene that occur on the same place on a chromosome. (Through a mutation, they are different.) A locus refers to the location on the chromosome where the gene is found.

Detailed explanation-4: -The genes on each chromosome are arranged in a particular sequence, and each gene has a particular location on the chromosome (called its locus).

Detailed explanation-5: -Allelic heterogeneity occurs when different variants at a single gene locus cause the same or similar phenotypic expressions of a disease or condition. Locus heterogeneity occurs when variants at different gene loci cause the same or similar phenotypic expressions of a disease or condition.