CUET · BIOLOGY · PYQ PAPER 2023

The step 'D' in the figure depicts:

A Region where the restriction enzyme cuts.
B An important gene of interest
C Primer joining region
D Only amplified product

Verified Solution

Answer & Solution

Correct Answer

(B) An important gene of interest

Step-by-step Solution

Detailed explanation

An important gene of interest

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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Match List - I with List - II.

List - I (Disease)	List - II (Pathogen)
(A) Thalassaemia	(I) Absence of one X chromosome
(B) Phenylketonuria	(II) Inborn error of metabolism
(C) Down’s Syndrome	(III) Autosomal recessive blood disease
(D) Turner’s Syndrome	(IV) Presence of an additional copy of the 21st chromosome

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Match List-I with List-II

List-I (Physical Quantity)	List-II (Units)
(A) Magnetic field	(I) \( J \, T^{-1} \)
(B) Magnetic moment	(II) \( T \, m \, A^{-1} \)
(C) Pole strength	(III) \( J \, T^{-1} m^{-1} \)
(D) Permeability of free space	(IV) \( Wb \, m^{-2} \)

Choose the correct answer from the options given below:

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List - I	List - II
(A) Transgenic mice	(I) Hereditary disease
(B) PCR	(II) Safety of Polio vaccine
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(D) Gene Therapy	(IV) Enhanced nutritional value