An individual has an additional copy of 'X' chromosome resulting into a karyotype 47, 'XXY'. The characteristics features of individual is/are:
A. Partially open mouth
B. Palm is broad
C. Gynaecomastia
D. Sterile
E. Short statured individual with small round head
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → C and D only
A. Partially open mouth — False. A feature of Down’s syndrome.
B. Palm is broad — False. A feature of Down’s syndrome.
C. Gynaecomastia — True.
D. Sterile — True.
E. Short statured individual with small round head — False. A feature of Down’s syndrome.
NCERT Extract:
Chromosomal Disorders – “… Klinefelter’s Syndrome : This genetic disorder is also caused due to the presence of an additional copy of Xchromosome resulting into a karyotype of 47, XXY. Such an individual has overall masculine development, however, the feminine development (development of breast, i.e., Gynaecomastia) is also expressed (Figure 4.17 a). Such individuals are sterile.”
