Daughter born to haemophiliac father and normal mother could be A) Normal B) Carrier C) Haemophiliac D) All of these
Option B) Haemophilia is mainly caused due to genetic mutation. It is mutation brings the changes in the gene which is required for clotting of blood. It is a recessive x linked. X chromosome recieved from mother has the gene for normal blood clotting while X chromosome from her father has the gene for hemophilia. The gene from mother is dominant. Therefore, female heterozygous are always carriers.
