If a normal woman marries a colourblind man, their
All sons will be colourblind and daughters normal
All daughters will be colourblind and sons normal
All children will be normal
All children will be colourblind
If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
Sickle -cell anaemia has not been eliminated from the African population because it
Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
Give scientific reasons : The product of phenylalanine catabolism excreted in the urine in phenylketonuria.