MHT CET · BIOLOGY · STD 12 - 4. Molecular Basis of Inheritance

Match column I with column II and select the correct answer form the option given below.
Column-I Column-II
i. Cistron a. addition of methylated GTP to 5'-end of hn RNA.
ii. Exon b. non-coding sequences which are removed by splicing.
iii. Intron c. Segment of DNA coding for a poly peptide
iv. Capping d. Coding sequences which appear in processed mRNA.

A i-b, ii-c, iii-a, iv-d
B i-d, i-c, iii-a, iv-b
C i-c, ii-d, iii-a, iv-b
D i-c, ii-d, iii-b, iv-a

Verified Solution

Answer & Solution

Correct Answer

(D) i-c, ii-d, iii-b, iv-a

Step-by-step Solution

Detailed explanation

Regulation of gene expression is a multistep process.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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	Column-I		Column-II
i.	Cistron	a.	addition of methylated GTP to 5'-end of hn RNA.
ii.	Exon	b.	non-coding sequences which are removed by splicing.
iii.	Intron	c.	Segment of DNA coding for a poly peptide
iv.	Capping	d.	Coding sequences which appear in processed mRNA.