In tomatoes, tall is dominant to dwarf, and smooth fruits are dominant to hairy fruits.A plant homozygous for both dominant traits is crossed with a plant homozygous for both recessive traits.The F₁ progeny are test-crossed with the following results in the F₂ progeny: 96 tall with smooth fruits; 94 dwarf with hairy fruits; 6 tall with hairy fruits; and 4 dwarf with smooth fruits.These data indicate that the genes are A) on different chromosomes. B) linked, and show 5 percent recombination. C) linked, and show 10 percent recombination. D) linked, and show 20 percent recombination. E) linked, and show 40 percent recombination.

Question

Quizplus · Accepted Answer

The presence of recombinant phenotypes (tall with hairy fruits and dwarf with smooth fruits) in lower frequencies (6 and 4 out of 200 total) indicates linkage between the genes with a 5 percent recombination frequency (10 recombinants out of 200 total offspring).

In Tomatoes, Tall Is Dominant to Dwarf, and Smooth Fruits