Biology

Mendel’s Law of Unit Character Inheritance states that traits are determined by alleles, discrete units of inheritance.

Each organism inherits one allele from each parent for a given trait, resulting in two alleles total.

If the alleles are different, the dominant allele masks the expression of the recessive allele.

For example, in pea plants, if the allele for tall stems (T) is dominant over the allele for short stems (t), a plant with the genotype Tt will be tall because the domina...