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:
$A$ and $E$ only
$A$ and $B$ only
$C$ and $D$ only
$B$ and $E$ only
A pregnant woman who has done aminocentesis test finds an extra Barr body in her embryo. The syndrome which is likely to be associated with the embryois
In Drosophila melanogaster, $3$ pairs of autosomes and sex chromosomes of $XO$ type give rise to a normal male in appearance. In man, $22$ pairs of autosomes and $XO$ type of sex chromosomes form
Turner's syndrome is
Who reported that Down’s syndrome is due to extra $21^{st}$ chromosome