How many group of chromosomes are found in human karyotype ?

a] How many pairs of chromosomes are present in human beings? Out of these, how many are sex-chromosomes? b] How many types of sex-chromosomes are found in human Beings?

How many pairs of chromosomes are present in human beings ? Out of these how many are sex chromosomes ? How many types of sex chromosomes are found in human beings ? "The sex of a new born child is a matter of chance and none of the parents may be newborn to justify this statement.

How many pairs of chromosomes are present in human beings ? Out of these how many are sex chromosomes ? How many types of sex chromosomes are found in human beings ? "The sex of a new born child is a matter of chance and none of the parents may be newborn to justify this statement.