AP BIOLOGY

Detailed explanation-1: -If an organism is heterozygous, the capital letter always comes first. For example: Tt NOT tT.

Detailed explanation-2: -The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).

Detailed explanation-3: -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-4: -For traits that have either two capital letters or two lowercase letters are known as a homozygous trait and for traits that have alternating letters are known as heterozygous traits. In heterozygous alleles, the capital letter will always come first.