Genetic Analysis: An Integrated Approach (3rd Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 9, Problem 21P

In an experiment to decipher the genetic code, a poly-AC mRNA ( ACACACAC… ) is synthesized. What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as

a. a doublet without overlaps?

b. a doublet with overlaps?

c. a triplet without overlaps?

d. a triplet with overlaps?

e. a quadruplet without overlaps?

f. a quadruplet with overlaps?

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A peptide is produced in two different cells. The primary structure is the same in both cells, but the amount of peptide is increased in one cell. What could be happening to the pre-mRNA or mRNA transcript within the cell that has the higher amount of this peptide? A. It has a shorter Poly-A tail B. An alternative polyadenylation (Poly-A) site is being selected C. Leaky scanning occurred D. B and C are both correct OE. None of the above
In the human enzyme encoded by the DCXR gene, a mutation in the protein coding region of the DCXR gene is described as 583 AC (deletion of 1 nucleotide at position +583). At the protein level, the mutation would be described as: a. a nonsense b. a missense c.
A geneticist induces a mutation in eukaryote cells. The mutation results in an inability to form the poly(A) tail during processing of pre-mRNA. What does this mean for the mature mRNA and what will be the effect on these cells?  Possible Answers: A. The mRNA will be spliced, but will not have a 5' cap. B. The mRNA will likely be degraded. C. The mRNA will not be cleaved. D. The mRNA will have too many Gs and Cs.

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Genetic Analysis: An Integrated Approach (3rd Edition)

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