Which of the following statements about the offspring of a cross between two carriers of a lethal recessive gene are true? Please select all that apply.

Question

Quizplus · Accepted Answer

Genotypes follow a typical Mendelian pattern, i.e., 1:2:1, homozygous dominant (AA): heterozygote (Aa): homozygous recessive (aa). As the homozygous recessive dies, the phenotypes seen in the surviving offspring follow a 1:2 ratio: homozygous dominant (AA) phenotype: heterozygous (Aa) phenotype. This means that ~67% of surviving offspring have the phenotype of the heterozygote and that if the wild-type gene is dominant, all surviving offspring will have the same phenotype.

Which of the Following Statements About the Offspring of a Cross