Given the following alleles that control the traits of Drosophila melanogaster: R = red eyes L = long wings B = brown body r = sepia eyes l = vestigial wings b = black body A testcross between a triple heterozygous parent and a recessive parent revealed the following expressed alleles: 55 sepia long brown 8 sepial long black 187 sepia vestigial black 1 sepia vestigial brown 43 red vestigial black 196 red long brown 2 red long black 9 red vestigial brown Determine the order of the loci and the distance between them in centimorgan (cM). Construct a gene map to show your results.

Human Anatomy & Physiology (11th Edition)
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Given the following alleles that control the traits of Drosophila melanogaster:
R = red eyes

L = long wings

B = brown body
r = sepia eyes

l = vestigial wings

b = black body


A testcross between a triple heterozygous parent and a recessive parent revealed the following
expressed alleles:


55 sepia long brown

8 sepial long black
187 sepia vestigial black

1 sepia vestigial brown
43 red vestigial black

196 red long brown
2 red long black

9 red vestigial brown


Determine the order of the loci and the distance between them in centimorgan (cM). Construct a
gene map to show your results. Show COMPLETE solution.

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