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Periodical

Perforated blobs may be early sponges.

Subjects: FOSSILS; MALOOF, Adam; CELL nucleiAUSTRALIAAUSTRALIAAUSTRALIAReport Available

  • Source: Science News for Kids. 9/8/2010, Vol. 178 Issue 6, p61-63. 3p. 1 Color Photograph.

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Periodical

DNA Detective Work.

Subjects: DNA; NUCLEIC acids

  • Source: Odyssey. Oct2009, Vol. 18 Issue 8, p14-17. 4p. 4 Color Photographs.

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  • 1-4 of  4 results for ""MOLECULAR clock""