Final answer:
Offspring are unlikely to express the recessive trait when one parent is heterozygous for a recessive genetic disorder and the other parent is homozygous for the dominant allele.
Step-by-step explanation:
In this case, if one parent is heterozygous for a recessive genetic disorder and the other parent is homozygous for the dominant allele, their offspring are unlikely to express the recessive trait. This is because the dominant allele from the homozygous parent will suppress the expression of the recessive allele. The offspring will inherit one recessive allele from the heterozygous parent and one dominant allele from the homozygous parent, resulting in a dominant phenotype.