AP BIOLOGY

Detailed explanation-1: -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. If the alleles are different, the individual is heterozygous.

Detailed explanation-2: -Homozygous: Having two identical alleles for a trait.

Detailed explanation-3: -Multiple alleles exist at the population level and an individual can have only two alleles for the given gene. An individual can have only one type of allele (homozygous) or two different alleles (heterozygous).

Detailed explanation-4: -Answer and Explanation: In humans and other diploid organisms, an individual always has only two alleles for a given gene because diploid organisms have only two copies of each gene. If an organism is diploid this means that they have two copies of every chromosome, and therefore two copies of every gene.

Detailed explanation-5: -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.