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Assume That Investigators Crossed a Strain of Flies Carrying the Dominant

Question 35

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Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second
chromosome recessive mutations smooth abdomen and straw body. The F1 Lobe females were then backcrossed with homozygous smooth abdomen, straw -body males, and the following phenotypes were observed:
Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body. The F1 Lobe females were then backcrossed with homozygous smooth abdomen, straw -body males, and the following phenotypes were observed: a() Give the gene order and map units for these three loci. b() What is the coefficient of coincidence? a() Give the gene order and map units for these three loci.
b() What is the coefficient of coincidence?

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(a) Lobe is in the middle.
smo...

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