Originea firelor de par se pierde in negura timpului, specialistii afirmand ca parul a aparut pentru prima oara la un stramos comun al mamiferelor, reptilelor si pasarilor. Cel putin asa afirma un ultim studiu dedicat acestui subiect, studiu care a descoperit gene asociate cu cresterea fanerelor, deopotriva in cadrul soparlelor si gainilor.
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