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tetrad
 
Definition:
Biology Glossary search by EverythingBio.com
 
     
  (1) Four homologous chromatids in a bundle in the first meiotic prophase and metaphase. The meiotic configuration of four chromatids first seen in pachytene. There is one tetrad per pair (bivalent) of homologous chromosomes.
(2) The four haploid product cells from a single meiosis.
 
     


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