Sickle-cell anaemia happens due to ...$A$... mutation in which ...$B$... of haemoglobin is affected.
Fill the correct option for $A$ and $B$
$A-$point; $B-$ $\beta$-chain
$A-$chromosomal; $B-\alpha -$chain
$A-$allele; $B-\alpha -$chain
$A-$non-allele; $B-$chain
Which one of the following symbols and its representation, used in human pedigree analysis is correct ?
$A$ : 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 not true of haemophilia?
The best example for pleiotropy is
Given below is pedigree chart showing the inheritance of a certain trait in human. Select the correct option for the given chart