Question

Some of the syndromes associated with abnormalities of sex chromosomes are:
A. Cerebral palsy
B. Klinefelter's syndrome
C. Turner's syndrome
D. Super females
Choose the correct answer from the options given below:

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

Hint:

Remember the common sex chromosome aneuploidies:

\textbf{Turner Syndrome:} XO (female)
\textbf{Klinefelter Syndrome:} XXY (male)
\textbf{Triple X (Super female):} XXX (female)
\textbf{Jacobs Syndrome (Super male):} XYY (male)

Answer 1

The Correct Option is D

Step 1: Define sex chromosome abnormalities. Step 1: These are genetic conditions with an atypical number of X or Y chromosomes. Normal patterns are 46,XX (female) and 46,XY (male).
Step 2: Analyze each condition.
Step 2:

(A) Cerebral palsy: A group of neurological disorders affecting movement and posture. It's usually caused by brain damage before, during, or shortly after birth, not a sex chromosome abnormality.
(B) Klinefelter's syndrome: A genetic condition in males caused by an extra X chromosome (47,XXY karyotype). This is a sex chromosome abnormality.
(C) Turner's syndrome: A genetic condition in females caused by a missing or partially missing X chromosome (45,X0 karyotype). This is a sex chromosome abnormality.
(D) Super females (Triple X syndrome): A genetic condition in females caused by an extra X chromosome (47,XXX karyotype). This is a sex chromosome abnormality.
Step 3: Identify correct syndromes.
Step 3: Klinefelter's syndrome (B), Turner's syndrome (C), and Super females (D) are caused by sex chromosome abnormalities. Cerebral palsy (A) is not. Therefore, B, C, and D is the correct answer.