Consider the data in the following table, derived from crossing a female fruit fly that was heterozygous for the sex-linked recessive loci, cut wings (ct), raspberry eyes (ra), and forked (f) bristles, with a wild-type male. Female progeny were all wild-type. Male progeny are listed below.   Phenotype Number of males ct   ra   f 70 +    ra   f 76 +    +    + 74 ct    +    f 356 +    ra   + 345 ct   ra   + 3 ct   +    + 72 +    +    f 4 Total 1,000 What is the map distance between cut wings and raspberry eyes?  29.2  15.1  30.6  15.5

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Consider the data in the following table, derived from crossing a female fruit fly that was heterozygous for the sex-linked recessive loci, cut wings (ct), raspberry eyes (ra), and forked (f) bristles, with a wild-type male. Female progeny were all wild-type. Male progeny are listed below.

 

Phenotype Number of males
ct   ra   f 70
+    ra   f 76
+    +    + 74
ct    +    f 356
+    ra   + 345
ct   ra   + 3
ct   +    + 72
+    +    f 4
Total 1,000

What is the map distance between cut wings and raspberry eyes?

 29.2
 15.1
 30.6
 15.5
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