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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

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

Describe the structure and complementary base pairing of DNA.

A frameshift mutation that results in the insertion of three nucleotides is often less deleterious than a mutation that results in the insertion of one nucleotide. Why?

Which of the following components is not involved during the formation of the replication fork?

a. single-strand binding proteins

b. helicase

c. origin of replication

d. ligase

The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the basis of the finding that: a. radioactive phage were found in the pellet b. radioactive cells were found in the supernatant c. radioactive sulfur was found inside the cell d. radioactive phosphorus was found in the cell
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