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Down syndrome is a chromosomal disorder. It is caused by having 1 extra chromosome (chromosome 21).
Deletion Syndrome or Williams Syndrome
Fragile X Syndrome
Fragile X Syndrome
Fragile X Syndrome
Fragile X Syndrome
an error in meiotic cell division
The fragile X syndrome is a genetic disorder caused by mutation of the FMR1 gene on the X chromosome.
It appears to be caused by a combination of genetic and environmental factors.
PWS is usually not inherited in MOSt cases. It occur as random events and is caused by the deletion of chromosome 15.
There are so many genetic disorder caused by sex linked to name few; Auto Immune disorder, Hemophilia, Night Blindness etc.
A genetic disorder caused by the presence of all or part of a third copy of chromosome 21.