Two fruit flies have been crossed that differ with regard to three alleles: Blac

Question

Two fruit flies have been crossed that differ with regard to three alleles: Black body (bb), sepia eyes (ee), and vestigial curly wings (ww). You have bred a heterozygous wild-type female to a homozygous mutant male fly (bb,ee,ww).
414 gray body, normal wings; red eyes 61 gray body, vestigial wings, red eyes 2 gray body, normal wings, sepia eyes 30 gray body, vestigial wings, sepia eyes 28 black body, normal wings, red eyes 1 black body, vestigial wings, red eyes 60 black body, normal wings, sepia eyes 412 black body, vestigial wings, sepia eyes
Which gene is in the middle? What is the recombination frequency? Draw chromosome map. Is interference operating? Please explain answers fully. Two fruit flies have been crossed that differ with regard to three alleles: Black body (bb), sepia eyes (ee), and vestigial curly wings (ww). You have bred a heterozygous wild-type female to a homozygous mutant male fly (bb,ee,ww).
414 gray body, normal wings; red eyes 61 gray body, vestigial wings, red eyes 2 gray body, normal wings, sepia eyes 30 gray body, vestigial wings, sepia eyes 28 black body, normal wings, red eyes 1 black body, vestigial wings, red eyes 60 black body, normal wings, sepia eyes 412 black body, vestigial wings, sepia eyes
Which gene is in the middle? What is the recombination frequency? Draw chromosome map. Is interference operating? Please explain answers fully.
414 gray body, normal wings; red eyes 61 gray body, vestigial wings, red eyes 2 gray body, normal wings, sepia eyes 30 gray body, vestigial wings, sepia eyes 28 black body, normal wings, red eyes 1 black body, vestigial wings, red eyes 60 black body, normal wings, sepia eyes 412 black body, vestigial wings, sepia eyes 414 gray body, normal wings; red eyes 61 gray body, vestigial wings, red eyes 2 gray body, normal wings, sepia eyes 30 gray body, vestigial wings, sepia eyes 28 black body, normal wings, red eyes 1 black body, vestigial wings, red eyes 60 black body, normal wings, sepia eyes 412 black body, vestigial wings, sepia eyes
Which gene is in the middle? What is the recombination frequency? Draw chromosome map. Is interference operating? Please explain answers fully.

Explanation / Answer

Black body (bb), sepia eyes (ee), vestigial curly wings (ww).

Parental=414 gray body, normal wings; red eyes and 412 black body, vestigial wings, sepia eyes

double crossover:2 gray body, normal wings, sepia eyes and 1 black body, vestigial wings, red eyes

ee gene will be in the middle.

recombinantion frequency: measure of genetic linkage and crossover is used in the creation of a genetic linkage map. 1cM= recombinant frequency 1%

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