Given below is pedigree chart showing the inheritance of a certain trait in human. Select the correct option for the given chart
Autosomal dominant trait
Autosomal recessive trait
Sex linked recessive
Sex linked dominant
If a colour blind lady marries a normal man, their children will be
A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind ?
$A$ : 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
Sickle cell anaemia is due to
Which of the following occurs due to the presence of autosome linked dominant trait?