A man with normal vision whose father was colourblind marries with women whose father was also colourblind. Suppose their first child is daughter then what are the chances of this child to be colourblind?
$100\, \%$
$25 \,\%$
$50\, \%$
$0 \,\%$
Haemophilia is more commonly seen in human males than in human females because
A haemophilic woman marries a normal man, then
Describe pedigree analysis and draw its symbols.
Select the correct sentence for colour blindness ?
In pedigree analysis, symbol given for sex unspecified is