If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
$50\%$
$25\%$
$100\%$
no chance
Disorder inherited as Mendel's law of inheritance called
$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic
A colour blind man marries the daughter of a colour blind person. Then in their progeny
Colour blindness is found more in males than in females because
Haemophilia is