Dictionary > Interkinesis

Interkinesis

Definition
noun
Interphase II, i.e. a short resting period occurring between meiosis I and meiosis II
Supplement
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 kinēsis (motion, movement)
See also:


You will also like...

Salmon jumping upstream in the river
Lotic Communities & Animals

A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

Oligodendrocyte and Schwann cell
The Central Nervous System

Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

human brain structure
The Conscious & Unconscious Nervous System

This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

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 ..

Birth of a Human Baby
Birth of a Human Baby

Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

Digestion and Absorption of Food
Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

Related Articles...

No related articles found

See all Related Topics