AP BIOLOGY

Detailed explanation-1: -When the copies of a gene differ from each other, they are known as alleles. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual.

Detailed explanation-2: -Every individual has two copies, or alleles, or a single gene. When the alleles are the same, they are known as homozygotes. When they are different, they are called heterozygotes. Homozygotes code for the same trait, for instance, blue eyes.

Detailed explanation-3: -An allele is one of two or more versions of DNA sequence (a single base or a segment of bases) at a given genomic location. An individual inherits two alleles, one from each parent, for any given genomic location where such variation exists. If the two alleles are the same, the individual is homozygous for that allele.

Detailed explanation-4: -Humans are diploids. This means that we only have two alleles for each of our genes. This is primarily because we only get one copy of a parent’s chromosomes. Since all of us have two parents, we have two sets of chromosomes, hence two alleles for each gene.