Test gives new meaning to "you have your daddy's smile"

New research reveals facial expressions for crying and laughter are clearly distinguishable in fetuses from 24 weeks, with wide implications for premature infants, identifying health problems in utero and even father bonding. By 16 weeks in utero, all of the muscles used in facial expressions are formed. But they don’t work until 24 weeks and they fine tune themselves dramatically after that. ParentCentral