Pick out the correct statements. \((1)\) Haemophilia is a sexlinked recessive disease. \((2)\) Down’s syndrome is due to aneuploidy. \((3)\) Phenylketonuria is an autosomal recessive gene disorder. \((4)\) Sickle cell anaemia is an \(X\)-linked recessive gene disorder.

A \((1), (3)\) and \((4)\) are correct.
B \((1), (2)\) and \((3)\) are correct.
C \((1) \) and \((4) \) are correct.
D \((2)\) and \((4)\) are correct.

Verified Solution

Answer & Solution

Correct Answer

(B) \((1), (2)\) and \((3)\) are correct.

Step-by-step Solution

Detailed explanation

(b): Sicklecell anaemia is an autosomal recessive genetic disorder. It can be transmitted from parents to the offspring when b oth the partners are carriers of the gene (or heterozygous).

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.

Same subject

Match List \(I\) with List \(II\).

List \(I\)	List \(II\)
\(A\). \(P\)-wave	\(I\). Beginning of systole
\(B\). \(Q\)-wave	\(II\). Repolarisation of ventricles
\(C\). \(QRS\) complex	\(III\). Depolarisation of atria
\(D\). \(T\)-wave	\(IV\). Depolarisation of ventricles

Choose the correct answer from the options given below :

NEET 2023 Medium

Explore more questions on app

From NEET

Explore more questions on app

Pick out the correct statements. \((1)\) Haemophilia is a sex­linked recessive disease. \((2)\) Down’s syndrome is due to aneuploidy. \((3)\) Phenylketonuria is an autosomal recessive gene disorder. \((4)\) Sickle cell anaemia is an \(X\)-­linked recessive gene disorder.

Step-by-step Solution

Pick out the correct statements. \((1)\) Haemophilia is a sexlinked recessive disease. \((2)\) Down’s syndrome is due to aneuploidy. \((3)\) Phenylketonuria is an autosomal recessive gene disorder. \((4)\) Sickle cell anaemia is an \(X\)-linked recessive gene disorder.