Question

A person has long legs, female like appearance with breast (gynecomastia) and sterile will have one or the genetic complement
A) XO
B) XXY
C) XXO
D) XXX

Answer 1

The male chromosome is represented by XY and the female is represented by XX. Any other representation is caused due to genetic abnormality in sex chromosome. It affects the development in males and females.

Complete answer:
To answer this question, we must know about the genetic disorders in sex chromosomes and its effect.
Let us discuss the different variations given in the question.

XO-Turner syndrome is a disorder of sex chromosomes in females in which one X chromosome is absent partially or completely. The symptoms of this disorder are small body structure, amenorrhea and infertility.
XXY- It is a condition in males who have an extra X chromosome. This disorder is known as Klinefelter syndrome. It results in infertility, gynecomastia, long legs, weaker muscles, poor coordination and smaller underdeveloped testicles.
XXO- It is also known as turner syndrome.
XXX- It happens due to trisomy in the X chromosome. The females have 47 chromosomes. The common features of this syndrome are females are generally taller than average and have no other effect on girl’s health.

Thus the correct answer is option (B).

Note: The symptoms appear during puberty in the males having Klinefelter syndrome. The common therapy for this disorder is testosterone replacement therapy. It can help in the development of secondary sexual characters like deepening of voice, muscle growth but cannot improve fertility and testicle size.