TETRAD

tetrad

Noun

  1. A group of four things.
  2. A tetravalent atom or radical.
  3. Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
  4. Group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.


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