Modifications and Mutagenesis MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Modifications and Mutagenesis, a fundamental topic in the field of Genetic Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Modifications and Mutagenesis MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Modifications and Mutagenesis mcq questions that explore various aspects of Modifications and Mutagenesis problems. Each MCQ is crafted to challenge your understanding of Modifications and Mutagenesis principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Genetic Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Modifications and Mutagenesis MCQs are your pathway to success in mastering this essential Genetic Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Modifications and Mutagenesis. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Modifications and Mutagenesis MCQs | Page 5 of 8

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Q41.
If ______ gene is there, the double crossover may leave ________ in the chromosome.

a.

linear, functional copy

b.

circular, functional copy

c.

linear, a non-functional copy

d.

circular, a non-functional copy

Discuss
Answer: (b).circular, functional copy
Q42.
If the target organism contains more than one copy of the gene, what is the effect on these copies?

a.

Only copy is disrupted

b.

All the copies are disrupted

c.

It is difficult to ensure that all the copies are disrupted

d.

Only a specified number of copies are disrupted

Discuss
Answer: (c).It is difficult to ensure that all the copies are disrupted
Q43.
If methods are based on cellular processes that lead to inactivation of gene expression by affecting the RNA, then it is called as ___________

a.

transcriptional

b.

pre-transcriptional

c.

post-transcriptional

d.

translational

Discuss
Answer: (c).post-transcriptional
Q44.
Choose the incorrect statement for the method based on antisense RNA.

a.

RNA is synthesized complementary to the sequence of the gene which is to be inactivated

b.

It is achieved by placing a DNA sequence which encodes RNA complementary to the RNA to be inactivated

c.

Expression of the endogenous gene is diminished

d.

This method is preferred over gene disruption has gene inactivation can be achieved completely

Discuss
Answer: (d).This method is preferred over gene disruption has gene inactivation can be achieved completely
Q45.
The method of post transcriptional gene silencing is particularly useful in ___________

a.

plants

b.

animals

c.

insects

d.

microorganisms

Discuss
Answer: (a).plants
Q46.
Down regulation of expression of endogenous genes by transformation with constructs that would generate sense RNA, rather than anti-sense RNA is known as ___________

a.

suppression

b.

co-suppression

c.

multisuppression

d.

anti-suppression

Discuss
Answer: (b).co-suppression
Q47.
In some organisms, presence of double stranded RNAs leads to breakdown of corresponding single stranded mRNA.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q48.
Double stranded RNA is cleaved by a nuclease called as Dicer and small fragments are generated known as ___________

a.

short interfering RNAs

b.

long interfering RNAs

c.

short interspersed RNAs

d.

long interspersed RNAs

Discuss
Answer: (a).short interfering RNAs
Q49.
The process of RNA inactivation by siRNAs is termed as ___________

a.

RNA silencing

b.

RNA interference

c.

Short RNA inactivation

d.

RNA disfunction

Discuss
Answer: (b).RNA interference
Q50.
DNA _________ is also a method for gene silencing through short RNAs.

a.

acetylation

b.

phosphorylation

c.

methylation

d.

acylation

Discuss
Answer: (c).methylation
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