You need to construct a strain of C. elegant that is homozygous for the Dpy and...
You need to construct a strain of C. elegant that is homozygous for the Dpy and Unc mutations. Unc and Dpy are unliked, autosomal genes, and both mutations are recessive. You're provided with one plate of stock heramphrodite worms that are homozygous for Dpy, a second plate of stock hermaphrodite worms that are homozygous for Unc, and a third plate with male worms that are homozygous wild type. The first step is to cross the wild type males with either an Unc or Dpy hermaphrodite. Show the result of this cross, and then the crosses required to achieve homozygous worms with both Dpy and Unc mutations.
Homework Answers
Solution :
From the above given data we know that we have provided a one plate of stock heramphrodite worms that are homozygous for Dpy, a second plate of stock hermaphrodite worms that are homozygous for Unc, and a third plate with male worms that are homozygous wild type.here wildtype homozygous male is DDUU and a recessive homozygous mutation with dduu alleles.Now by conducting the 3 crosses we get the following
Cross 1 :
DDUU x ddUU
F1 : DdUU
Cross 2 :
DdUU x DDuu
F1 : DdUu and DDUu
Cross 3 : DdUu x DdUu
| DU | dU | Du | du | |
| DU | DDUU | DdUU | DDUu | DdUu |
| dU | DdUU | ddUU | DdUu | ddUu |
| Du | DDUu | DdUu | DDuu | Dduu |
| du | DdUu | ddUu | Dduu | dduu |
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