Sturtevant provided genetic evidence for the existence of four pairs of chromosomes in Drosophila in which of the following ways?
A) There are four major functional classes of genes in Drosophila.
B) Drosophila genes cluster into four distinct groups of linked genes.
C) The overall number of genes in Drosophila is a multiple of four.
D) The entire Drosophila genome has approximately 400 map units.
E) Drosophila genes have, on average, four different alleles.

Question

Quizplus · Accepted Answer

Sturtevant observed that genes in Drosophila tend to be inherited together in groups, which he called linkage groups. He found that there were four distinct linkage groups, corresponding to the four pairs of chromosomes in Drosophila. This provided genetic evidence for the existence of four pairs of chromosomes in Drosophila.

Sturtevant Provided Genetic Evidence for the Existence of Four Pairs