Which of these is not a Mendelian disorder?
Cystic fibrosis
Sickle-cell anaemia
Colourblindness
Turner's syndrome
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 ?
$A$ : Sickel cell anaemia occurs due to the point mutation.
$R$ : $mRNA$ produced from $Hb(s)$ gene has $GAG$ instead of $GUG$.
Which of the following is an example of sex-linked disease?
If a normal women marries a colourblind man
Which of the following is not $X$-linked recessive