How does a single cell become a multicellular organism?

A multicellular organism develops from a single cell.

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Afemale  with a mutation in one copy of a gene on the  x  chromosome is said to be a carrier for an  x-linked condition. a  male  with a mutation in a gene on the  x  chromosome is typically affected with the  condition.  x-linked recessive diseases  can occur in both  males  and  females. hope this !