How many alleles are in the genotype for a simple trait? 3 4

## Step 1<br />In genetics, an allele is a variant form of a gene. Each individual has two copies of each gene, one from each parent. These copies are known as alleles.<br /><br />## Step 2<br />For a simple trait, which is determined by a single gene, an individual has two alleles, one from each parent.<br /><br />## Step 3<br />These two alleles can be the same (homozygous) or different (heterozygous). The combination of these two alleles determines the individual's genotype for that trait.