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Molecular Basis of Inheritance MCQs
Class XII Biology
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NCERT Based
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NEET Practice
📘 Concept Based
📝 Exam Level
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668 questions in this chapter
Question 291 of 668
📘 CLASS XII
DNA polymerase catalyzes polymerization only in one direction, that is _______
Polymerization always occurs in the 5' to 3' direction.
Question 292 of 668
📘 CLASS XII
On the _______ strand, the replication is continuous.
The leading strand is synthesized continuously 5' to 3'.
Question 293 of 668
📘 CLASS XII
On the lagging strand, replication is _______
The lagging strand is synthesized in short fragments (discontinuous).
Question 294 of 668
📘 CLASS XII
The discontinuously synthesized fragments are joined by the enzyme _______
DNA ligase joins Okazaki fragments.
Question 295 of 668
📘 CLASS XII
The DNA polymerases on their own cannot initiate the process of replication, they need a _______
Replication requires an RNA primer to start.
Question 296 of 668
📘 CLASS XII
Replication of DNA occurs at the _______ phase of the cell cycle.
DNA replication occurs during the Synthesis (S) phase.
Question 297 of 668
📘 CLASS XII
A failure in cell division after DNA replication results in _______
Whole sets of chromosomes increase, causing polyploidy.
Question 298 of 668
📘 CLASS XII
The process of copying genetic information from one strand of the DNA into RNA is termed _______
Transcription is creating RNA from a DNA template.
Question 299 of 668
📘 CLASS XII
In transcription, Adenine pairs with _______ instead of Thymine.
In RNA, Uracil pairs with Adenine.
Question 300 of 668
📘 CLASS XII
A transcription unit in DNA is defined primarily by three regions: A Promoter, The Structural gene, and A _______
The three parts are Promoter, Structural Gene, and Terminator.
