If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.

In which of the following colourblindness is inherited

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

Genes for colour blindness is carried by

$I.$ Abnormal development

$II.$ Father

$III.$ Mother

$IV.$ Autosomes

A normal woman whose father was colourblind. marries a normal man. What kinds of children can be expected and in what proportion?