Pick out the correct statements: (i) Colour blindness is a sex-linked recessive gene disorder. (ii) Klinefelter's syndrome is 18th chromosomal trisomy. (iii) Phenylketonuria is an autosomal dominant genetic disorder. (iv) Down’s syndrome is due to aneuploidy.

Question

Pick out the correct statements: (i) Colour blindness is a sex-linked recessive gene disorder. (ii) Klinefelter's syndrome is 18th chromosomal trisomy. (iii) Phenylketonuria is an autosomal dominant genetic disorder. (iv) Down&rsquo;s syndrome is due to aneuploidy. (A) i, ii and iv are correct (B) i and ii are correct (C) ii, iii and iv are correct (D) i and iv are correct

Tardigrade Admin · Accepted Answer

Colour blindness is usually a genetic condition. The gene which is responsible for the condition is carried on the X chromosome.
Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example, a human cell having 45 or 47 chromosomes instead of the usual 46. Down’s syndrome is due to aneuploidy with 47 chromosomes.
Edward syndrome is a genetic disorder caused by the presence of all or part of an extra 18^th chromosome.
Phenylketonuria is an autosomal recessive gene disorder.

Q. Pick out the correct statements: (i) Colour blindness is a sex-linked recessive gene disorder. (ii) Klinefelter's syndrome is 18th chromosomal trisomy. (iii) Phenylketonuria is an autosomal dominant genetic disorder. (iv) Down’s syndrome is due to aneuploidy.

i, ii and iv are correct

i and ii are correct

ii, iii and iv are correct

i and iv are correct

Q. Pick out the correct statements:
(i) Colour blindness is a sex-linked recessive gene disorder.
(ii) Klinefelter's syndrome is 18^th chromosomal trisomy.
(iii) Phenylketonuria is an autosomal dominant genetic disorder.
(iv) Down’s syndrome is due to aneuploidy.