| crossing over |
(cross·ing over) (kros¢ing o¢v[schwa]r) the exchanging of genetic material between nonsister chromatids of the paired homologous chromosomes during the pachytene stage of the first meiotic division, resulting in new combinations of genes; called also chiasmatypy.
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| cross circulation |
the circulation in a portion of the body of one animal of blood supplied from another animal.
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| Cross syndrome |
(Cross syndrome) (kros) [Harold Eugene Cross, American physician, born 1937] see under syndrome.
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| cross-arm flap |
a surgical flap cut from one arm and attached to the other to repair a defect.
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| cross-bridges |
(cross-bridges) (kros-brij?schwa]z) in A bands of myofibrils, the intertwining of the thick and the thin filaments to form the dark striations.
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