If a colour blind woman marries a normal visioned man, their sons will be

$A$ – Sickle-cell anaemia is sex linked recessive trait

$R$ – This disease is controlled by more that two pair of alleles

Sickle -cell anaemia has not been eliminated from the African population because it

If a colour blind lady marries a normal man, their children will be

Mention any two autosomal genetic disorders with their symptoms.