Topic: Sex-linked inheritance, Mendelian and chromosomal disorders· Genetics and Evolution
Pick out the correct statements :(a) Haemophilia is a sex-linked recessive disease.(b) Down's syndrome is due to aneuploidy.(c) Phenylketonuria is an autosomal recessive gene disorder.(d) Sickle cell anaemia is an X - linked recessive gene disorder.
1. (a) and (d) are correct.
2. (b) and (d) are correct.
3. (a), (c) and (d) are correct.
4. (a), (b) and (c) are correct.