This combination of sensitivity  and dexterity gave our ancestors the precise motor  control needed to snatch up insects, pinch berries and seeds, and keep a  firm grip on slim branches.
Esta combinación de sensibilidad y destreza dio a nuestros ancestros el control motor preciso y necesario para atrapar insectos, pellizcar bayas y semillas, y mantener un agarre firme en ramas delgadas.