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Chapter 14: Q. 36 (page 368)

What is the consequence of mutation of a mismatch repair enzyme? How will this affect the function of a gene?

Short Answer

Expert verified

Function of a gene may be affected or not be expressed.

Step by step solution

01

Step 1. Introduction

A mutation is a rare and random inheritable variation or alternation in the structure of genetic material in the genotype of an organism that is caused by some mutants.

02

Step 2. Explanation

The mismatch repair enzyme corrects the errors after replication is completed by removing the wrong nucleotide and adding the correct one. If there is any damage in the mismatch repair enzyme then it can create more permanent damage.

In the case of xeroderma pigmentosa, mutations are not repaired. In this gene function may be affected or it may not be expressed.

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Most popular questions from this chapter

When Chargaff was performing his experiments, the tetranucleotide hypothesis, which stated that DNA was composed of GACT nucleotide repeats, was the most widely accepted view of DNA’s composition. How did Chargaff disprove this hypothesis?

Which of the following does the enzyme primase synthesize?

a. DNA primer

b. RNA primer

c. Okazaki fragments

d. phosphodiester linkage

A scientist creates fruit fly larvae with a mutation that eliminates the exonuclease function of DNA pol III. Which prediction about the mutational load in the adult fruit flies is most likely to be correct?

a. The adults with the DNA pol III mutation will have significantly more mutations than average.

b. The adults with the DNA pol III mutation will have slightly more mutations than average.

c. The adults with the DNA pol III mutation will have the same number of mutations as average.

d. The adults with the DNA pol III mutation will have fewer mutations than average.

DNA double helix does not have which of the following? a. antiparallel configuration b. complementary base pairing c. major and minor grooves d. uracil

Prokaryotes have a single circular chromosome while eukaryotes have linear chromosomes. Describe one advantage and one disadvantage to the eukaryotic genome packaging compared to the prokaryotes.
See all solutions

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