Which of the following is the correct match:
Down Syndrome = 21st Chromosome
Sickle cell anaemia = X – Chromosome
Haemophilia = Y – Chromosome
Parkinson Disease = X & Y Chromosomes
, Down Syndrome is a chromosomal disorder caused by the presence of an additional copy of chromosome number 21 (trisomy of 21) , . Sickle-cell anaemia is an autosome linked recessive trait, not X-chromosomal . Haemophilia is a sex-linked (X-linked) recessive disease, not Y-linked .
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