Haemophilia $A$ is due to the absence of
Antihaemophilic globulin
Calcium
Plasma thromboplastin
$X$ chromosome
A colour blind son will born when
The amino acid substituted in sickle cell anaemia is
It is said, that the harmful alleles get eliminated from population over a period of time, yet sickle cell anaemia is persisting in human population. Why ?
If a haemophilic man marries a woman carrier (heterozygous) for haemophilia, what would be the possibility that their daughter would be haemophilic