In the F₂ generation of Mendel's monohybrid crosses, the 1:2:1 ratio refers to: A)single-nucleotide polymorphisms (SNPs). B)copy-number variations (CNVs). C)variable number of tandem repeats (VNTRs). D)genotypes. E)phenotypes.

Question

Quizplus · Accepted Answer

The 1:2:1 ratio in Mendel's monohybrid crosses refers to the genotypes of the offspring produced from crossing two organisms with different alleles at a single gene locus. Specifically, it refers to the ratio of homozygous dominant: heterozygous: homozygous recessive genotypes that are expected in the offspring. Therefore, the best choice is D, genotypes. The other options listed (SNPs, CNVs, and VNTRs) refer to different types of genetic variation that are not specifically related to Mendelian inheritance, and the option for phenotypes is not as precise as the answer related to genotypes in explaining the expected ratio in Mendel's crosses.

In the F2 Generation of Mendel's Monohybrid Crosses, the 1:2:1

In the F₂ Generation of Mendel's Monohybrid Crosses, the 1:2:1