AP BIOLOGY

Detailed explanation-1: -However, this means that there are three possible combinations of alleles… Genotype. The combination of alleles an individual possesses (e.g. Aa) is known as their genotype. If an individual has two of the same alleles, they are said to be homozygous. If they have two different alleles they are said to be heterozygous.

Detailed explanation-2: -The genotype is often written as YY or yy, for which each letter represents one of the two alleles in the genotype. The dominant allele is capitalized and the recessive allele is lower case.

Detailed explanation-3: -Genotype = genes present in an organism (usually abbreviated as two letters) TT = homozygous = pure. Tt = heterozygous = hybrid.

Detailed explanation-4: -genotype = the genes of an organism; for one specific trait we use two letters to represent the genotype. A capital letter represents the dominant form of a gene (allele), and a lowercase letter is the abbreviation for the recessive form of the gene (allele).