A human female with Turner’s syndrome

- Physical, psychomotor and mental development is retarded.

- Palm is broad with characteristic palm crease, this symptoms shows....

What is Down’s syndrome ? Give its symptoms and cause. Why is it that the chances of having a child with Down’s syndrome increases if the age of the mother exceeds forty years ?

Which of the following statements are correct about Klinefelter's Syndrome?

$A$. This disorder was first described by Langdon Down $(1866)$.

$B$. Such an individual has overall masculine development. However, the feminine developement is also expressed.

$C$. The affected individual is short statured.

$D$. Physical, psychomotor and mental development is retarded.

$E$. Such individuals are sterile.

Choose the correct answer from the options given below:

Monosomy and trisomy can be represented as

In Klinefelter's syndrome, what is generally the set of sex chromosome