Because most lethal alleles are inherited in a recessive manner,a cross between two heterozygous individuals could result in a 2:1 genotypic ratio in their surviving offspring.

Question

Because most lethal alleles are inherited in a recessive manner,a cross between two heterozygous individuals could result in a 2:1 genotypic ratio in their surviving offspring.

Quizplus · Accepted Answer

In a cross between two heterozygous individuals for a recessive lethal allele, the homozygous recessive genotype results in non-viable offspring, leaving a 2:1 ratio of heterozygous to homozygous dominant surviving offspring.

Because Most Lethal Alleles Are Inherited in a Recessive Manner,a Cross