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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 301 of 668
📘 CLASS XII
The DNA strand that has the polarity 3' to 5' acts as a _______
The 3'-5' strand acts as the template for 5'-3' RNA synthesis.
Question 302 of 668
📘 CLASS XII
The strand which does not code for anything is referred to as the _______ strand.
The strand with the same sequence as RNA (except T/U) is called the coding strand, though it is not the template.
Question 303 of 668
📘 CLASS XII
The promoter is located towards the _______ end of the structural gene (coding strand reference).
The promoter is at the 5' end (upstream) of the coding strand.
Question 304 of 668
📘 CLASS XII
The terminator is located towards the _______ end of the coding strand.
The terminator is at the 3' end (downstream) of the coding strand.
Question 305 of 668
📘 CLASS XII
A _______ is defined as a segment of DNA coding for a polypeptide.
A cistron is the functional unit of a gene coding for a polypeptide.
Question 306 of 668
📘 CLASS XII
Monocistronic structural genes are found in _______
Eukaryotes typically have monocistronic genes (one gene, one protein).
Question 307 of 668
📘 CLASS XII
Polycistronic structural genes are common in _______
Bacteria/prokaryotes often have polycistronic genes (operons).
Question 308 of 668
📘 CLASS XII
In eukaryotes, the coding sequences or expressed sequences are defined as _______
Exons are the expressed sequences that remain in mature mRNA.
Question 309 of 668
📘 CLASS XII
The intervening sequences or non-coding sequences are called _______
Introns are removed during processing.
Question 310 of 668
📘 CLASS XII
In bacteria, there is _______ DNA-dependent RNA polymerase.
Bacteria have a single RNA polymerase for all RNA types.
