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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
🤖 AI Explanations
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668 questions in this chapter
Question 371 of 668
📘 CLASS XII
If an inheritable mutation is observed in a population at high frequency, it is referred to as DNA _______
High frequency inheritable mutation constitutes polymorphism.
Question 372 of 668
📘 CLASS XII
The probability of such variation is higher in _______ DNA sequences.
Non-coding sequences accumulate mutations faster as they are less selected against.
Question 373 of 668
📘 CLASS XII
DNA fingerprinting is the basis of _______ testing.
It is used to settle paternity disputes.
Question 374 of 668
📘 CLASS XII
The bulk DNA forms a _______ peak and the other small peaks are referred to as satellite DNA.
Bulk DNA forms a major peak in density gradient centrifugation.
Question 375 of 668
📘 CLASS XII
A DNA sequence having the sequence 5'-GAATTC-3' is recognized by the restriction enzyme _______
GAATTC is the recognition site for EcoRI.
Question 376 of 668
📘 CLASS XII
Retroviruses have _______ genome.
Retroviruses have an RNA genome.
Question 377 of 668
📘 CLASS XII
In a nucleosome, the histones are organized into an _______
Histones form an octamer core.
Question 378 of 668
📘 CLASS XII
The typical distance between two base pairs is _______ nm.
0.34 nm or 3.4 Angstroms.
Question 379 of 668
📘 CLASS XII
The flow of information from DNA to RNA to Protein is called _______
Crick termed this flow the Central Dogma.
Question 380 of 668
📘 CLASS XII
Histones are positively charged because they are rich in _______ amino acids.
Basic amino acids (Lys, Arg) give histones a positive charge.
