(University of Missouri-Columbia) Past studies have shown that biparental care of offspring can be affected negatively when females and males are exposed to bisphenol A (BPA. In a study published today in the journal PLOS One, researchers at the University of Missouri found that mice pups whose grandparents had been exposed to BPA, had different vocalization patterns. This, in turn, could also affect the amount of parental care they received. Scientists believe results could have important relevance to humans.