Target Exam

CUET

Subject

Biology

Chapter

Principles of Inheritance and Variation

Question:

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:

Options:

C and D only

A only

A and B only

E only

Correct Answer:

C and D only

Explanation:

The correct answer is Option (1) → C and D only

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, 44+XXY.

Such an individual has overall masculine development, however, the feminine development (development of breast, i.e., Gynaecomastia) is also expressed . Such individuals are sterile.