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Essentials of Genetics 8th Edition Test Bank by William
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Essentials of Genetics 8th Edition Test Bank by William (Comprehensive Guide| Download for Grade A+)

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  • January 24, 2023
  • 163
  • 2022/2023
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Essentials of Genetics 8th Edition Test Bank by William

(All Chapters Covered)

,Essentials of Genetics 8th Edition Test Bank by William
Multiple Choice



1) A protein is 300 amino acids long. Which of the following could be the number of nucleotides in the
section of DNA that codes for this protein? (Remember: DNA is double-stranded.)

E) 1800




2) A short segment of an mRNA molecule is shown below. The polypeptide it codes for is also shown:

5′-AUGGUGCUGAAG : methionine-valine-leucine-lysine

Assume that a mutation in the DNA occurs so that the fourth base (counting from the 5′ end) of the messenger
RNA now reads A rather than G. What sequence of amino acids will the mRNA now codefor? (You do not need
a copy of the genetic code to answer the question.)

E) methionine-methionine-leucine-lysine



3) The term peptidyl transferase relates to .

B) peptide bond formation during protein synthesis

4) Which of the following are among the major components of prokaryotic ribosomes? C) 16S

rRNA, 5S rRNA, and 23S rRNA

5) The one-gene:one-enzyme hypothesis emerged from work on which two organisms?

1. A) coli and yeast

2. B) Drosophila and humans

3. C) Neurospora and Drosophila

4. D) coli and humans

5. E) All of the answers listed are correct.



6) By their experimentation using the Neurospora fungus, Beadle and Tatum were able to propose

,the far-reaching hypothesis that .

C) the role of a specific gene is to produce a specific enzyme

, 7) The β chain of adult hemoglobin is composed of 146 amino acids of a known sequence. In comparing the
normal β chain with the β chain in sickle cell hemoglobin, what alteration is one likely to find?

B) glutamic acid replacing valine in the first position

8) The primary structure of a protein is determined by .

A) the sequence of amino acids




9) Which protein class directly controls many of the metabolic reactions within a cell?D)

enzymes

10) The secondary structure of a protein includes .

C) α-helix and β-pleated sheet

11) Side groups of amino acids are typically classified under which of the following?A)

polar, nonpolar

12) Nutritional mutations can be defined as .

A) those mutations that do not allow a bacterium or fungus to grow on minimal medium but do allow
growth on complete medium




2) Conditional mutations are more likely to result from a mutation caused by which of the following
alterations to the coding region of a gene?

E) tautomeric shift




3) A class of mutations that results in multiple contiguous amino acid changes in proteins is likely to be
which of the following?

D) frameshift




4) Two formal terms used to describe categories of mutational nucleotide substitutions in DNA are
.

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