Question

Which of the following disorders are the results of aneuploidy? (A) Haemophilia
(B) Down’s Syndrome
(C) Thalassemia
(D) Turner’s Syndrome

• A. (B) and (D) only
• B. (A), (B) and (C) only
• C. (A), (B), (C) and (D)
• D. (A) and (C) only

Hint:

Aneuploidy refers to the presence of an abnormal number of chromosomes in a cell, leading to genetic disorders like Down’s Syndrome and Turner’s Syndrome.

Answer 1

The Correct Option is A

Step 1: Identify disorders caused by aneuploidy.
- Down’s Syndrome: This is caused by an extra copy of chromosome 21 (trisomy 21).
- Turner’s Syndrome: This results from a missing or incomplete X chromosome (monosomy X).
Step 2: Identify disorders that are not caused by aneuploidy.
- Haemophilia: This is an X-linked genetic disorder, not caused by aneuploidy.
- Thalassemia: This is a genetic blood disorder, not caused by aneuploidy.
Conclusion:
Thus, the correct answer is (1) (B) and (D) only.
Final Answer: \[ \boxed{\text{The correct answer is (B) and (D) only.}} \]