If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?
$50 \%$
$75 \%$
$100 \%$
$25 \%$
Haemophilia is
Choose incorrect statement for haemophilia.
Study the pedigree chart given below.
$[Image]$
What does it show?
A man known to be victim of haemophilia marries a normal woman whose father was known to be a bleeder. Then it is expected that
Sickle-cell anaemia happens due to ...$A$... mutation in which ...$B$... of haemoglobin is affected.
Fill the correct option for $A$ and $B$