Friday
July 25, 2014

Homework Help: biology

Posted by billy on Monday, July 18, 2011 at 10:10am.

In Drosophila melanogaster, cut wings (ct) is recessive to normal wings (ct+), sable body (s) is recessive to gray body (s+), and vermilion eyes (v) is recessive to red eyes (v+). All three recessive mutations are X- linked. A female fly with cut wings, sable body, and vermilion eyes is crossed to a male with normal wings, gray body, and red eyes. The F1 females produced by this cross were mated with cut, sable, vermilion males in a testcross. The following are the progeny resulting from the testcross.

v ct s 510
v+cts 1
v+ ct+ s 14
v+ ct+ s+ 500
v+cts+ 73
v ct s+ 20
v ct+ s 81
v ct+ s+ 1
Total 1200

Determine the order of these genes on the chromosome.

Calculate the map distances between the genes.

Determine the coefficient of coincidence and the interference among these genes.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

biology: genetics - In Drosophila melanogaster, cut wings (ct) is recessive to ...
biology - This is to do with genetics and drosophila. There are 3 pairs of ...
Biology - This is to do with genetics and drosophila. There are 3 pairs of ...
Genetics - In Drosophila melanogaster, the genes for purple eyes (pr) and curved...
Genetics - Hi, I'm just trying to learn gene mapping and I'm a bit confused as ...
genetics - 1. Long wings (L) in fruit flies is dominant to short wings (l). If ...
biology - two fruitflies were mated. Red eys and normal wings are dominant to ...
Biology - In Drosophila, a cross was made between a female heterozygous for the ...
English - Hi, can someone proofread this and let me know if there are any ...
biology - In D. virilise, the mutations dusky body (dy), cut wings (ct) and ...

Search
Members