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Down's syndrome, trisomy 21, is due to what likely problem during meiosis? Select one: a. Failure of the APC to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II. b. DNA replication issues causing an additional third chromosome to be replicated. c. Overactive APC adding to many Ub to cohesins, so sister chromatids due not split correctly in anaphase II. d. Failure of the MPF to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II.

Down's syndrome, trisomy 21, is due to what likely problem during meiosis? Select one: a. Failure of the APC to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II. b. DNA replication issues causing an additional third chromosome to be replicated. c. Overactive APC adding to many Ub to cohesins, so sister chromatids due not split correctly in anaphase II. d. Failure of the MPF to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II.

Human Anatomy & Physiology (11th Edition)
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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Down's syndrome, trisomy 21, is due to what likely problem during meiosis?

Select one:
a. Failure of the APC to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II.
b. DNA replication issues causing an additional third chromosome to be replicated.
c. Overactive APC adding to many Ub to cohesins, so sister chromatids due not split correctly in anaphase II.
d. Failure of the MPF to add Ub to cohesins, so sister chromatids due not split correctly in anaphase II.
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