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 encoding these traits are linked, with the following map distances: pr vg 13 The interference among these genes is 0.5. A fly with a black body, purple eyes, and vestigial wings is crossed with a fly homozygous for a gray body, red eyes, and normal wings. The female progeny are then crossed with males that have a black body, purple eyes, and vestigial wings. If 1000 progeny are produced by this testcross, what will be the phenotypes and proportions of the progeny?
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 encoding these traits are linked, with the following map distances: pr vg 13 The interference among these genes is 0.5. A fly with a black body, purple eyes, and vestigial wings is crossed with a fly homozygous for a gray body, red eyes, and normal wings. The female progeny are then crossed with males that have a black body, purple eyes, and vestigial wings. If 1000 progeny are produced by this testcross, what will be the phenotypes and proportions of the progeny?
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 encoding these traits
are linked, with the following map distances:
pr
vg
13
The interference among these genes is 0.5. A fly with a black body,
purple eyes, and vestigial wings is crossed with a fly homozygous for a
gray body, red eyes, and normal wings. The female progeny are then
crossed with males that have a black body, purple eyes, and vestigial
wings. If 1000 progeny are produced by this testcross, what will be the
phenotypes and proportions of the progeny?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1121126a-709f-4715-a85a-bbe7e93d3800%2Fc0e1722c-db3d-4e74-80a1-9202c4755b93%2Fgbji3os.jpeg&w=3840&q=75)
Transcribed Image Text: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 encoding these traits
are linked, with the following map distances:
pr
vg
13
The interference among these genes is 0.5. A fly with a black body,
purple eyes, and vestigial wings is crossed with a fly homozygous for a
gray body, red eyes, and normal wings. The female progeny are then
crossed with males that have a black body, purple eyes, and vestigial
wings. If 1000 progeny are produced by this testcross, what will be the
phenotypes and proportions of the progeny?
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