Answered: Illustrate the Parental and F1 cross

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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In Drosophila melanogaster, black body (b) is recessive to gray body (b+), purple eyes (pr) are recessive to red eyes (pr+), and vestigial wings (vg) are recessive to normal wings (vg+). The loci coding for these traits are linked with the following map distances:

b--------8cM--------pr------------------30cM-----------------vg

The interference among these genes is 0.2. A fly with black body, purple eyes, and vestigial wings is crossed with a fly homozygous for gray body, red eyes and normal wings. The female progeny were then crossed with males that have black body, purple eyes, and vestigial wings.

a) Illustrate the Parental and F1 cross

b) If 2000 progeny are produced from this test cross, what will be the phenotypes that will result and how many of each will there be?

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