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Molecular Basis of Inheritance MCQs
Class XII Biology
•
NCERT Based
•
NEET Practice
📘 Concept Based
📝 Exam Level
🤖 AI Explanations
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668 questions in this chapter
Question 391 of 668
📘 CLASS XII
Termination of translation occurs when a _______ codon reaches the A site.
Stop codons signal termination.
Question 392 of 668
📘 CLASS XII
The human genome has approximately _______ billion base pairs.
Approximately 3 billion (3.3 x 10^9).
Question 393 of 668
📘 CLASS XII
Sickle cell anemia is caused by a _______ mutation.
It is a point mutation (substitution).
Question 394 of 668
📘 CLASS XII
Taylor used Vicia faba to prove that DNA replication is _______
Taylor proved semi-conservative replication in eukaryotes.
Question 395 of 668
📘 CLASS XII
DNA replication is _______ and semi-discontinuous.
It is semi-conservative.
Question 396 of 668
📘 CLASS XII
The enzyme _______ separates the two strands of DNA during replication.
Helicase unwinds the DNA.
Question 397 of 668
📘 CLASS XII
To prevent re-annealing of separated DNA strands, _______ proteins bind to them.
Single Stranded Binding proteins stabilize the strands.
Question 398 of 668
📘 CLASS XII
_______ is the enzyme that synthesizes RNA primer.
Primase synthesizes the RNA primer.
Question 399 of 668
📘 CLASS XII
DNA polymerase adds nucleotides to the _______ end of the growing chain.
Nucleotides are added to the 3' OH end.
Question 400 of 668
📘 CLASS XII
Okazaki fragments are formed on the _______ strand.
Okazaki fragments form on the lagging strand.
