Concept explainers
Introduction: Deoxyribonucleic acid (DNA) can be split into many small pieces with the help of restriction enzyme. Restriction enzyme cut DNA at highly specific sites. It has evolved in bacteria where it play role against foreign DNA.
Answer to Problem 1SQ
Correct answer: Option c. is given as “restriction enzymes”
Therefore, option c. is correct.
Explanation of Solution
Reasons for the correct statement:
Restriction enzyme is highly specific to DNA sequence. It recognizes and cuts DNA where a unique site is present.
Hence, option c. is correct.
Reasons for the incorrect statement:
Option a. is given as “DNA ligase”. But, DNA ligase joins the DNA fragment.
So, option a. is incorrect.
Option b. is given as “DNA polymerase”. But, DNA polymerase synthesizes the DNA.
So, option b. is incorrect.
Option d. is given as “RNA polymerase”. But, RNA polymerase synthesize the mRNA strand by a process called transcription.
So, option d. is incorrect.
Hence, options a., b, and d. are incorrect.
Restriction endonuclease cuts DNA at highly specific target sequences.
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Chapter 13 Solutions
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