A couple whose sons are colourblind with $AB$ blood group, identify the parents from the following..
Mother colourblind with $A$ blood group, and father normal with blood group-$B$
Mother normal with blood group-$A$, and father colourblind with blood group-$B$
Mother colourblind with blood group-$B$, and father normal with blood group-$B$
Mother normal with blood group-$A$, and father colourblind with blood group-$B$
Which one is the incorrect statement with regard to the importance of pedigree analysis?
Given below is a highly simplified representation of the human sex chromosomes from a karyotype. The gene $'a'$ and $'b'$ could be of
If a colour blind woman marries a normal visioned man, their sons will be
Most studies on human genetics have been made through
If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?