Dictionary > Interkinesis


Interphase II, i.e. a short resting period occurring between meiosis I and meiosis II
Meiosis is a specialized form of cell division that ultimately gives rise to non-identical sex cells. There are two successive nuclear divisions: meiosis I and meiosis II. Each of them has four major phases. These are prophase, metaphase, anaphase and telophase. Each of these phases is designated as I or II depending where it occurs, i.e. in meiosis I or in meiosis II. In both nuclear divisions (i.e. meiosis I and meiosis II), cytokinesis occurs. Cytokinesis is the division of the cytoplasm and the plasma membrane following the division of the nucleus resulting into two cells, each having its own nucleus and cytoplasm surrounded by a plasma membrane. After the first cytokinesis, there may be a short period of rest before the new cell proceeds to meiosis II. This resting period is called interkinesis or interphase II. It is called interphase II because the first interphase (i.e. interphase I) takes place before the cell enters meiosis I. It is in interphase I that the cell replicates its DNA. No DNA replication occurs in interphase II. Nevertheless, proteins and RNAs are synthesized before the cell proceeds to meiosis II. The spindle in meiosis I disassembles and the microtubules reassemble giving rise to new spindles for meiosis II.
There are organisms that do not have an interkinesis. The cells produced from meiosis I immediately proceed to meiosis II.
Word origin: Latin inter– (between) + Greek kin─ôsis (motion, movement)
See also:

You will also like...

Freshwater lake ecosystem
Freshwater Producers and Consumers

Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

Types and Causes of Brain Damage
Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

A Balanced Vitamin Diet – Vitamins A – K

A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

Cell structure
Cell Structure

A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..

bryophyte - sporophyte and gametophyte
Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

primitive arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..