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Peer reviewedCharlesworth, Brian – Science, 1991
The evolutionary paths by which the characteristic properties of sex chromosomes may have evolved are reviewed. The evolution of the X and Y chromosomes from a cosexual ancestor is discussed. (CW)
Descriptors: DNA, Evolution, Genetics, Heredity
Peer reviewedMagasanik, Boris – Science, 1988
Stresses the importance of investigating bacterial mechanisms to discover clues for a greater understanding of cells. Cites examples of study areas of biological significance which may reveal information about the evolution of prokaryotes and eukaryotes and lead to a comprehensive theory of cell biology. (RT)
Descriptors: Biological Sciences, Biology, College Science, Cytology
