Choose correct option.

$(i)$ The heterozygous female transmit the disease to son.

$(ii)$ Change in the shape of the $RBC$ from biconcave disc to elongated sickle like structure.

$(iii)$ Mentally retarded.

$(iv)$ Heamoglobin not formed proper amount in blood.

• A

  Colour blindness, thalassaemia, pheny ketonuria, anaemia.

• B

  Haemophilia, sickle cell anaemia,Klinefelter's syndrome, thalassemia.

• C

  Down's syndrome, klinefelter's syndrome,colour blindness, turner's syndrome. .

• D

  Haemophilia, sickle cell anaemia,phenyl ketonuria, thalassaemia.