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Inessa [10]
3 years ago
11

In fruit flies, red eyes (pr _) are dominant to purple eyes (prpr) and normal wings (vg _) are dominant to vestigial wings (vgvg

). The genes are located on the same chromosome. A pure breeding red-eyed fly with vestigial wings was crossed with a pure-breeding purple-eyed fly with normal wings. All of the F1 progeny had a WT phenotype. What represents the arrangement of alleles on the F1's chromosome?
Biology
1 answer:
Assoli18 [71]3 years ago
8 0

Answer:

F1) 100% wild type, Pr Vg / pr vg

     -----Pr--------Vg------

     -----pr---------vg------    

Explanation:

<u>Available data</u>:

  • Two genes located on the same chromosome
  • red eyes (Pr _) are dominant to purple eyes (prpr)
  • normal wings (Vg _) are dominant to vestigial wings (vgvg)

Cross:  A pure breeding red-eyed fly and vestigial wings with a pure-breeding purple-eyed fly and normal wings

Parentals)   Pr vg / Pr vg      x     pr Vg / pr Vg  

Gametes)   ----Pr-------vg----         ----pr-------Vg----            

                  ----Pr-------vg----         ----pr--------Vg----  

F1) 100% wild type, Pr Vg / pr vg

     -----Pr--------Vg------

     -----pr---------vg------    

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