Down's syndrome occurs in the ........... pair of chromosome by increasing a chromosome.

  • A

    $22^{th}$

  • B

    $21^{th}$

  • C

    $7^{th}$

  • D

    $23^{rd}$

Similar Questions

In order to determine whether variations of a character in a population were genetically controlled, the most appropriate procedure will be to

  • [AIIMS 1983]

Select the incorrect statemant from the following.

Linkage was first suggested by

A hereditary disease which is never passed on from father to son is

Meta-females have