….......... arises due to either inheritance of only X chromosome from parents or due to inactivation of the gender-related part of X-chromosomes.
4/30
If one parent is normal and one parent is carrier of sickle-cell anaemia, then the progenies will be
5/30
If one parent is carrier and one parent is a sufferer of sickle-cell anaemia, then the progenies will be
16/30