What does the word divalent mean?
Definition of divalent : having a chemical valence of two also : bonded to two other atoms or groups.
What are bivalents in biology?
A bivalent is one pair of chromosomes (sister chromatids) in a tetrad. A tetrad is the association of a pair of homologous chromosomes (4 sister chromatids) physically held together by at least one DNA crossover.
What is difference between bivalent and divalent?
As adjectives the difference between bivalent and divalent is that bivalent is (chemistry) having a valence of while divalent is (chemistry) having a valence of two.
What is monovalent and divalent?
An atom, ion, or elements with a valence of one (they can either donate or accept two electrons), which can form one covalent bond is called monovalent. Examples for monovalent atoms are Hydrogen, Sodium, Chlorine, etc. An atom, ion, or elements with a valence of two, is called divalent.
What is a divalent group?
Divalent functinal groups are those which have valency two, for example – esters, ketone, aldehyde, imine, etc.
What is centromere required for?
Centromere is required for the movement of chromosomes towards the pole. The word “centromere” is derived from the Greek words Centro (central) and mere (part).
What stage do sister chromatids separate?
Anaphase
Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate.
What is meant by synaptonemal complex?
Synaptonemal complex: A protein structure that forms between two homologous chromosomes during meiosis and that is thought to mediate chromosome pairing, synapsis, and recombination. The synaptonemal complex is a tripartite structure consisting of two parallel lateral regions and a central element.
What is a bivalent functional group?
Divalent/BIVALENT functional groups:these group has a valence of two. Valency is the number of chemical bonds formed, which may be covalent, polar covalent, or ionic. Example: Compounds include the imino (=NH) and carbonyl (=O)
What is bivalent group?
Bivalent (chemistry), a molecule formed from two or more atoms bound together.