Frequency of Chromosomal disorders Among Live Born Infants

Frequency of Chromosomal disorders  Among Live Born Infants 

Autosomal Abnormalities

Trisomy 21

1 in 800

Trisomy 18

1 in 5,000

Trisomy 13

1 in 15,000

Marfan syndrome

1 in 10,000

 

Sex Chromosomal Abnormalities

Klinefelter Syndrome (47,XXY)

1 in 1000 males

XYY Syndrome (47,XYY)

1 in 800 males

Turner Syndrome (45X or 45X/46XX or 45X/46XY)

1 in 3000 females

Triple X syndrome (47,XXX)

1 in 1000 females

                                   

Y Chromosome

Genes & Chromosomes

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