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Professor of Botany

Cold and Palms

 
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center gene in fruit fly example
genotypes sex number
+ + + females 1000
sc s v males 314
+ + + males 280
+ s v males 150
sc + + males 156
sc + v males 46
+ s + males 30
sc s + males 10
+ + v males 14

Solving for center gene

  1. Ignore wild type males
  2. Choose any parental and any double cross-over
  3. Locate the center gene by comparison
genotypes sex number
sc s v males 314
+ + v males 14

Or

genotypes sex number
+ + + males 280
+ + v males 14

thus the center gene is v

 
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This web site is provided for instruction in Botany and Zoology 342 or Genetics 342

Text: Genetics: A conceptural ApproachBenjamin A Pierce

This is our friend Oliver the parrotlet, a true parrot, the smallest in the world.


 

 by Kenneth G. Wilson,
Professor of Botany
Miami University
wilsonkg@muohio.edu