In Drosophila, a cross between males expressing the three X-linked recessive traits, scute bristles (sc), sable body (s) and vermilion eyes (v) and wild type females. What progeny are expected? If you take a male and a female from this group and cross them you get the following results:
| genotypes |
sex |
number |
| + |
+ |
+ |
females |
1000 |
| sc |
s |
v |
males |
314 |
| + |
+ |
+ |
males |
280 |
| + |
s |
v |
males |
150 |
| sc |
+ |
+ |
males |
156 |
| sc |
+ |
v |
males |
46 |
| + |
s |
+ |
males |
30 |
| sc |
s |
+ |
males |
10 |
| + |
+ |
v |
males |
14 |
Which is the center gene?
What is the recombination for region I?
What is the recmbination for region II?
What is the final map and the intaerference?
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