Drosophila

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
cbio
Garter
Garter
Posts: 2
Joined: Sun Sep 26, 2010 3:36 pm

Drosophila

Post by cbio » Mon Sep 27, 2010 2:18 pm

In Drosophila, ebony body (e) and rough eyes(ro) are encoded by autosomal recessive alleles for genes found on chromosome 3; they are separated by 20cM. The recessive allele for the gene that encodes curly wings(cy) is found on chromosome 2 and assorts independently of e and ro. When an e+ ro+/e ro cy+/cy fly is testcrossed, what proportion of the offspring will have ebony body, smooth eyes and curly wings?

a. 25%
b. 20%
c. 10%
d. 5%
e. 2%

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest