Respuesta :

Hi!

Ras is, by definition,  "a family of related proteins which is expressed in all animal cell lineages and organs." 

Hope this helps :)
fyoung13
RAS actually is a family of related proteins which is expressed in all animal cell lineages and organs. All RAS protein family members belong to a class of protein called small GTPase which are involved in the transmission of signals within cells.

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