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Bivalent (Adjective)

Used of homologous chromosomes associated in pairs in synapsis.

All adjective clusters.

During meiosis, chromosomes are arranged in a bivalent configuration before crossing over occurs.
The bivalent structure of homologous chromosomes is crucial for accurate chromosomal separation.
In meiotic prophase I, each bivalent consists of two sister chromatids joined at the centromere.
The formation of bivalent chromosomes is a key step in the process of synapsis.
In many organisms, the bivalent configuration of chromosomes is stabilized by the synaptonemal complex.

Having a valence of two or having two valences.

Relational adjectives (pertainyms).

Oxygen is a bivalent element because it typically forms compounds by forming two bonds with other atoms.
In chemistry, hydrogen is an example of a monovalent element that combines with bivalent oxygen to form water.
A bivalent molecule can act as a bridging ligand, bonding with two metal ions to form a complex compound.
Carbon's tetravalent character can change to bivalent when it is sp-hybridized, having only two unshared valence orbitals.
Sulfur has two different allotropes that display its bivalent character in various oxidation states and forms.