A genotype refers to an individual's genetic makeup, specifically the combination of alleles they possess for a specific gene
. It can be represented by symbols or the actual DNA sequence at a specific location in the genome
. For example, BB, Bb, bb could be used to represent a given variant in a gene
. The genotype is not the only factor that determines an individual's observable characteristics or traits, which is referred to as the phenotype
. Environmental factors can also affect phenotype
