Brits Think Umbilical Cord Is a Musical Note Twenty percent of 18- to 25-year-olds do, at least By Evann Gastaldo, Newser Staff Posted Oct 7, 2010 11:44 AM CDT 20 comments Comments This is not a musical note. (?drcorneilus) (Newser) – More than 20% of young British adults made it all the way to somewhere between the ages of 18 and 25 … without learning how long a pregnancy lasts. They believe it lasts a year, the Guardian reports. That’s just one surprising finding among many from a recent survey of 2,000 18- to 25-year-olds. Ten percent believed eating red meat influenced a baby’s gender, and 20% thought an umbilical cord was a musical note. Once the baby’s out, the cluelessness continues: A full half expect babies to walk and talk within one year, and 70% thought that caring for a baby during its first year would only cost $1,594 total (the true cost is estimated to be about nine times higher). And looks are important to the respondents, too: 27% would consider genetic engineering if it allowed them to achieve a more attractive baby, and 26% of females would consider plastic surgery—for themselves—to get back into pre-pregnancy shape.