During a medical investigation, an infant was found to possess an extra chromosome 21. Describe the symptoms the child is likely to develop later in the life.

Down’s syndrome- the cause of this genetic disorder is the presence of an extra chromosome 21.

This disorder was 1st described by Langdom Down.

The affected individual is short statured, with small round head furrowed tongue and partially open mouth. Palm is broad with characteristic palm crease(palm lines). Physical psychomotor and mental development is retarded.