Answer / abhilash

21 st chromosome both in males and females is extra
chromosome it is otherwise called s mongolism.symptoms are
moon like face,mental retardation,eyes,mouth wide
open,tongue out .this is one of the genetic disorder.

Does anyone know of any genetic defects on animals? I'm just curious why I've never seen an animal with gigantism, or dwarfism, or down syndrome. I'm sure they all dont die at birth. I'm really interested in some information on this. thanks

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