Science News for February 28, 1999

Knockout Mouse Reveals Genetic Mechanism In Defective Mammalian Ear Development

The Notch signaling pathway is a key regulator controlling the proper development of many different cell types. In mice without Jagged2, there is a significant increase in hair cell density and a decrease in supporting cells.

SourceJackson Laboratory·JournalNature Genetics·DateFeb 28, 1999

Employed Moms Found Not To Have Negative Effect On Children

A new longitudinal study found that working mothers do not have a significant negative impact on their children's development. The research, based on the National Longitudinal Survey of Youth, analyzed data from approximately 12,600 individuals and found no significant differences between children of employed and non-employed mothers.

SourceAmerican Psychological Association·JournalDevelopmental Psychology·DateFeb 28, 1999