Colour blindness results from
Absence of rods
Absence of cones
Absence of eyelids
Inverted retina
A haemophilic woman marries a normal man, then
Which is correct for inheritance of autosome linked recessive gene?
Colour blindness is a disease usually affecting man but the factor for it is transmitted to the children always by woman. This is because particular factor is located on
A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion
Haemophilia, a $X$-linked recessive disease is caused due to deficiency of