Pick out the correct statements.

$(1)$ Haemophilia is a sex­linked recessive disease.

$(2)$ Down’s syndrome is due to aneuploidy.

$(3)$ Phenylketonuria is an autosomal recessive gene disorder.

$(4)$ Sickle cell anaemia is an $X$-­linked recessive gene disorder.

  • [NEET 2016]
  • A

    $(1), (3)$ and $(4)$ are correct.

  • B

    $(1), (2)$ and $(3)$ are correct.

  • C

    $(1) $ and $(4) $ are correct.

  • D

    $(2)$ and $(4)$ are correct.

Similar Questions

Select incorrect statement

$(A)$ Linked genes cause absolute lethality
$(B)$ Persons affected by $PKU$ do not show mental disorder
$(C)$ $F_{2}$ ratio in codominance and incomplete dominance are same
$(D)$ Sex of male Drosophila is dependent on $Y-$chromosome

Marriages between close relatives and cousins is not advisable because

Select the correct statement:

  • [NEET 2018]

A man can inherit his $X-$chromosome from his

Doctor's son