Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 17, Problem 52SA
Summary Introduction
To review:
The explanation for changes in coat colordistribution of mice offspring caused by endocrine disruptor—bisphenolA (BPA).
Introduction:
A female agouti mouse(obese mouse with yellow-colored coat), heterozygous for coat color(genotype
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A geneticist examines an ear of corn in which most kernels are yellow, but he finds a few kernels with purple spots, as shown here. Give a possible explanation for the appearance of the purple spots in these otherwise yellow kernels, accounting for the different sizes of the spots. (Hint: See the section on Ac and Ds elements in corn.)
Parents who both have "sickle-cell trait", i.e, are heterozygous for HbS have a child who is tested at birth, and is found to be homozygous for HbS (both alleles affected). What is the molecular reason why the child presents with no symptoms until 6 months of age?
a.) the mutation affects the beta chain, which is not dominant at birth
b.) the mutation affects the alpha chain, which is not dominant at birth
c.) babies cannot be exposed to low oxygen that triggers symptoms
d.) babies cannot be exposed to high oxygen that triggers symptoms
Why B is correct?
Chapter 17 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 17 - Prob. 1QCh. 17 - Prob. 2QCh. 17 - Prob. 3QCh. 17 - Prob. 4QCh. 17 - Prob. 5QCh. 17 - Prob. 6QCh. 17 - Prob. 7QCh. 17 - Prob. 8QCh. 17 - Prob. 1RQCh. 17 - Prob. 2RQ
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