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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![3. Three autosomal genes are linked along the same chromosome. The distance
between gene A and B is 7 mu, the distance between B and C is 11 mu, and the
distance between A and C is 4 mu. An individual who is AA bb CC was crossed to an
individual who is aa BB cc to produce heterozygous F1 offspring. The F1 offspring were
then crossed to homozygous aa bb cc individuals to produce F2 offspring.
A. Draw the arrangement of alleles on the chromosomes in the parents and in the F1
offspring.
B. Where would a crossover have to occur to produce an F2 offspring that was
heterozygous for all three genes?
C. If we assume that no double crossovers occur in this region, what percentage of F2
offspring is likely to be homozygous for all three gene?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F86dc0c51-6b32-42ea-bdeb-b95a5073ccc6%2F69e38a56-5a40-4782-8da5-ba72c6374b58%2Foicxr0n_processed.png&w=3840&q=75)
Transcribed Image Text:3. Three autosomal genes are linked along the same chromosome. The distance
between gene A and B is 7 mu, the distance between B and C is 11 mu, and the
distance between A and C is 4 mu. An individual who is AA bb CC was crossed to an
individual who is aa BB cc to produce heterozygous F1 offspring. The F1 offspring were
then crossed to homozygous aa bb cc individuals to produce F2 offspring.
A. Draw the arrangement of alleles on the chromosomes in the parents and in the F1
offspring.
B. Where would a crossover have to occur to produce an F2 offspring that was
heterozygous for all three genes?
C. If we assume that no double crossovers occur in this region, what percentage of F2
offspring is likely to be homozygous for all three gene?
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