Edward's syndrome characterised by mental dificency is caused by trisomey of chromosome

Edward's syndrome characterized by mental deficiency is caused by trisomy of chromosome (a) 5 (b) 9 (c) 15 (d) 18

Down's syndrome is characterised by

Conn's syndrome is characterised by

In Edwards syndrome the Karyotype is

Down's syndrome a chromosomal disorder in human is caused by

The Edward's syndrome was discovered in the year

Go through the given genetic disorders (I) Down's syndrome (II) Edward's syndrome (III) Patau's syndrome (IV) Turner's syndrome Which ones are due to trisomy of 21 chromosome?

Down's syndrome is caused by the presence of extra chromosome number