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?
Phenylketonuria
Sickle cell anaemia
Haemophilia
Thalassemia
In pedigree analysis, the square, blackened and horizontal lines represents
If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be