AP BIOLOGY

Detailed explanation-1: -An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

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.

Detailed explanation-3: -Since there are two copies of each gene, there are two alleles, which may be the same or different.

Detailed explanation-4: -Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits.