In Drosophila, the yellow (y) gene is near the telomereof the long arm of the acrocentric X chromosome,while the singed (sn) gene is located near the middle ofthe same X chromosome arm. On the wings of femaleflies of genotype y sn / y+ sn+, you can very rarely findpatches of yellow tissue within which a small subset ofcells also have singed bristles.a. How can you explain this phenomenon?b. Would you find similar patches on the wings offemales having the genotype y+ sn / y sn+?
In Drosophila, the yellow (y) gene is near the telomereof the long arm of the acrocentric X chromosome,while the singed (sn) gene is located near the middle ofthe same X chromosome arm. On the wings of femaleflies of genotype y sn / y+ sn+, you can very rarely findpatches of yellow tissue within which a small subset ofcells also have singed bristles.a. How can you explain this phenomenon?b. Would you find similar patches on the wings offemales having the genotype y+ sn / y sn+?
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, the yellow (y) gene is near the telomere
of the long arm of the acrocentric X chromosome,
while the singed (sn) gene is located near the middle of
the same X chromosome arm. On the wings of female
flies of genotype y sn / y+ sn+, you can very rarely find
patches of yellow tissue within which a small subset of
cells also have singed bristles.
a. How can you explain this phenomenon?
b. Would you find similar patches on the wings of
females having the genotype y+ sn / y sn+?
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