Answered: Two different female Drosophila were…

Name: Two different female Drosophila were isolated, each heterozygous for t
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Description: Two different female Drosophila were isolated, each heterozygous for the autosomally linked genes black body (b), dachs tarsus (d), and curved wings (c). These genes are in the order d–b–c, with b closer to d than to c. Shown in the following table i

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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Two different female Drosophila were isolated, each heterozygous for the autosomally linked genes black body (b), dachs tarsus (d), and curved wings (c). These genes are in the order d–b–c, with b closer to d than to c. Shown in the following table is the genotypic arrangement for each female, along with the various gametes formed by both. Identify which categories are noncrossovers (NCO), single crossovers (SCO), and double crossovers (DCO) in each case. Then, indicate the relative frequency with which each will be produced.

Female A
Female B
d b +
d + +
+ + c
+ b c
Gamete formation
(1) d b c
(5) d + +
(1) d b +
(5) d b c
(2) + + +
(6) + b с
(2) + + c
(6) + + +
(3) + + c
(7) d + c
(3) d + c
(7) d + +
(4) d b +
(8) + b +
(4) + b +
(8) + b C

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