The best example for pleiotropy is
$ABO$ Blood group
Skin colour
Phenylketoneuria
Colour Blindness
A haemophilic woman marries a normal man, then
Following characters are indicate
$(i)$ presence of sickle - shaped $RBC$
$(ii)$ Blood not clot, non stop bleeding
$(iii)$ The heterozygous female transmit the disease to sons.
$(iv)$ Both heterozygous parents transmit the disease to offspring
If a man who is colour blind marries a women, who is pure normal for colour vision, the chances of their sons have colour blindness is
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be