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  1. Health & Medicine

    First complete look at families’ genes

    Comparing the complete genetic material of family members pinpoints genes involved in three rare inherited diseases.

    By Laura Sanders
  2. Chemistry

    Polymer shifts shape with changing temperature

    Common material’s ‘memory’ could be exploited for smart fabrics or other gadgets.

    By Rachel Ehrenberg
  3. Life

    Chicken cells have strong sense of sexual identity

    In birds, hormones may not be the last word in determining males and females.

    By Susan Milius
  4. Life

    Evolutionary genetic relationships coming into focus

    Researchers have filled in about 40 percent of the tree of life for mammals and birds, but other vertebrates lag behind.