4. A homozygous Roughened fly is mated to a homozygous scarlet fly, yielding all Roughened F₁ offspring. F₁ females are then bred to homozygous scarlet males, yielding the following F₂: phenotype Roughened scarlet Roughened, scarlet wild-type number (1000 total) 287 287 213 213 a. Diagram the cross. b. Determine the NCO and SCO offspring and calculate the distance (in mu) between st and R. c. Using the data from this and the two previous problems, draw a map of chromosome three in Drosophila, featuring the three alleles in the correct order with the distances between each allele clearly labeled.
4. A homozygous Roughened fly is mated to a homozygous scarlet fly, yielding all Roughened F₁ offspring. F₁ females are then bred to homozygous scarlet males, yielding the following F₂: phenotype Roughened scarlet Roughened, scarlet wild-type number (1000 total) 287 287 213 213 a. Diagram the cross. b. Determine the NCO and SCO offspring and calculate the distance (in mu) between st and R. c. Using the data from this and the two previous problems, draw a map of chromosome three in Drosophila, featuring the three alleles in the correct order with the distances between each allele clearly labeled.
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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Transcribed Image Text:4. A homozygous Roughened fly is mated to a homozygous scarlet fly, yielding all Roughened F₁ offspring. F₁ females
are then bred to homozygous scarlet males, yielding the following F₂:
a. Diagram the cross.
b.
phenotype
Roughened
scarlet
Roughened, scarlet
wild-type
number (1000 total)
287
287
213
213
Determine the NCO and SCO offspring and calculate the distance (in mu) between st and R.
c. Using the data from this and the two previous problems, draw a map of chromosome three in Drosophila,
featuring the three alleles in the correct order with the distances between each allele clearly labeled.
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