Colour blindness in man is
Due of deficiency of vitamin $A$
Due of absence of visual purple in retina
Due to absence of rods in retina
A sex linked abnormality
Pattern baldness, moustaches and beard in human males are examples of
A son of a colourblind father and normal homozygous mother marries to a daughter of normal father and heterozygous mother than their children will be
Which one of the following symbols and its representation, used in human pedigree analysis is correct?
Genes for colour blindness is carried by
$I.$ Abnormal development
$II.$ Father
$III.$ Mother
$IV.$ Autosomes