Haemophilia is
Autosomal
$Y$-linked
$Z$-linked
$X$-linked
What is the cause of haemophilia
A marriage between normal visioned man and colourblind woman will produce which of the following types of offsprings
Disorder inherited as Mendel's law of inheritance called
A person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin. This heterozygous condition is called