Final answer:
Mendel's law of dominance states that in a heterozygote, the dominant allele will conceal the presence of the recessive allele, and both nondominant alleles must be present for the recessive trait to appear.
Step-by-step explanation:
Mendel's law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic. The dominant allele will be expressed exclusively, while the recessive allele will remain latent. To have a recessive trait appear, both nondominant alleles must be present. Offspring that have two copies of the recessive allele will express the recessive trait.
Learn more about Mendel's Law of Dominance