Assume that a cross is made between tall and dwarf tobacco plants.The F₁ generation showed intermediate height,while the F₂ generation showed a distribution of height ranging from tall to dwarf,like the original parents,and many heights between the extremes.These data are consistent with which one of the following modes of inheritance?
A) multiple-factor inheritance
B) alternation of generations
C) codominance
D) incomplete dominance
E) hemizygosity

Question

Quizplus · Accepted Answer

The distribution of height in the F₂ generation ranging from tall to dwarf with many heights in between suggests the involvement of multiple genes affecting the trait, which is characteristic of multiple-factor inheritance (also known as polygenic inheritance). This mode of inheritance involves several genes, each contributing a small amount to the phenotype, resulting in a continuous range of phenotypes.

Assume That a Cross Is Made Between Tall and Dwarf