Dr Nick

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About Dr Nick

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Teaching Since: May 2017
Last Sign in: 339 Weeks Ago, 5 Days Ago
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Education

  • MBA (IT), PHD
    Kaplan University
    Apr-2009 - Mar-2014

Experience

  • Professor
    University of Santo Tomas
    Aug-2006 - Present

Category > Essay writing Posted 28 Jul 2017 My Price 9.00

the genes for eye color

In Drosophila, the genes for eye color, wing shape, and wing length are located on chromosome II. Purple eyes (pr), arc bent wings (a), and vestigial wings (vg) are the mutant forms of the wild type traits red eyes, straight wings, and long wings, respectively.You've discovered some data in your genetics laboratory which indicates that the distance between vg and pr is 12.5 m.u., the distance between a and pr is 44.7 m.u., and the distance between a and vg is 32.2 m.u.

Part A

From this information, deduce the order of these genes on chromosome II and identify which gene is in the middle.

Part B

You begin studying heterozygous females (a pr vg/+ + +) and homozygous recessive males as part of your thesis project. Based on the information from Part A, if you set up a cross between the female and male flies, which of the following represents the phenotypic class of offspring resulting from a single crossover event between pr and vg?

Part C

If a total of 1250 offspring were obtained from your cross, determine the number of offspring that you would expect to obtain that represent a single crossover event between pr and vg if interference does not occur.

Part D

Upon careful examination of the offspring obtained from your cross, it was determined that only 25 offspring were double crossover phenotype -- half of the 50 that was expected.Now, how many offspring that represent a single crossover event between pr andvg are expected, considering that positive interference has occurred?

Answers

Dr Nick
(4)
Status NEW Posted 28 Jul 2017 06:07 PM My Price 9.00

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