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Science News for October 12, 2000


Meteorite may be primitive solar system material, sayScienceauthors

A fragile, charcoal-like meteorite that plummeted onto a frozen Canadian lake last January may represent the most primitive solar system material yet studied. Analysis of its mineral composition and oxygen and carbon isotopes suggests it could be part of a new class of carbonaceous chondrites, more primitive than any found previously.

Taming wild wheat

Researchers at Cold Spring Harbor Laboratory have created a 'map' of the wild emmer wheat genome, revealing hundreds of unique DNA sequences on 14 chromosomes. This new understanding will aid in breeding better wheat crops and shed light on the evolution of wheat.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateOct 12, 2000

Dual-earner couples follow traditional gender roles

A new study by Cornell University found that dual-earner couples tend to follow traditional gender roles, with husbands' careers given priority. This 'neotraditional' model helps couples manage work and family demands, but may have negative consequences for women's job security and advancement opportunities.

SourceCornell University·JournalSocial Problems·DateOct 12, 2000

Putting muscle in the nucleus

A team of scientists from the University of Illinois at Chicago has discovered a molecular motor called myosin-1 in the nucleus, where it powers the assembly line that forges RNA messages off DNA templates. This finding offers insight into the DNA transcription process and may lead to new ways to treat cancers and other diseases.

SourceUniversity of Illinois Chicago·JournalScience·DateOct 12, 2000