Bivalent vs. Tetrad

Bivalentadjective

(chemistry) Having a valence of 2; having two ligands

Bivalentadjective

(genetics) Of, or relating to a pair of homologous synapsed chromosomes that occur during meiosis.

Bivalentadjective

(of a vaccine) Protecting against two different viruses.

Bivalentnoun

(genetics) Any bivalent chromosome.

Bivalentadjective

Equivalent in combining or displacing power to two atoms of hydrogen; dyad.

Bivalentadjective

having a valence of two or having two valences

Bivalentadjective

used of a chromosome that is not paired or united with its homologous chromosome during synapsis;

Tetradnoun

A group of four things.

Tetradnoun

(biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.

Tetradnoun

(biology) A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.

Tetradnoun

(cartography) A unit of land area of two by two (that is, four) square kilometres.

Tetradnoun

(chemistry) A tetravalent atom or radical.

Tetradnoun

(mathematics) A group of four basis vectors for a four-dimensional manifold in differential geometry.

Tetradnoun

The number four; a collection of four things; a quaternion.

Tetradnoun

A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad.

Tetradnoun

the cardinal number that is the sum of three and one