(3) The following is a list of loci from Drosophila
melanogaster that have been mapped via...
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Biology
(3) The following is a list of loci from Drosophilamelanogaster that have been mapped via linkage studies. Thesymbols for the loci have been shortened to one letter, and mapdistances have been rounded. Here are the map distances, in cM, forall pair-wise combinations of the 7 loci:
c-d
50
d-s
50
f-y
3
c-f
11
d-t
12
s-t
50
c-s
7
d-w
50
s-w
19
c-t
50
d-y
50
s-y
21
c-w
12
f-s
18
t-w
50
c-y
14
f-t
50
t-y
50
d-f
50
f-w
1
w-y
2
How many linkage groups are defined by these loci?
Draw a map for each linkage group with the locus positionsindicated. Include the distances between each neighbor.Example:
y                     x                     z
           4                     8        Â
Your map(s):
Answer & Explanation
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3.9 Ratings (638 Votes)
distance between two linked genes is the recombination frequencybetween genesIf two genes are not linked to each other the recombinationfrequency between genes is 50 so if the distance between twogenes is 50 cM
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