Interkinesis
Interkinesis (pronounced: in-ter-ki-NEE-sis) is a phase of the cell cycle that occurs between the first and second divisions of meiosis.
Etymology
The term "interkinesis" is derived from the Greek words "inter", meaning "between", and "kinesis", meaning "movement".
Definition
Interkinesis is a brief period of rest that cells undergo between the two divisions of meiosis. Unlike interphase, which is the resting phase that occurs between the divisions of mitosis, interkinesis does not involve DNA replication.
Process
During interkinesis, the cell briefly exits the meiotic process and enters a state similar to G1 phase of the cell cycle. The nuclear envelope re-forms around the chromosomes, which may decondense back into a more relaxed structure. However, the cell does not replicate its DNA during this phase. After a short period, the cell re-enters meiosis and proceeds to the second division.
Related Terms
- Meiosis: The process of cell division that produces four daughter cells, each with half the number of chromosomes as the parent cell.
- Mitosis: The process of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.
- Cell Cycle: The series of events that take place in a cell leading to its division and duplication.
- Nuclear Envelope: The double lipid bilayer that encloses the genetic material in eukaryotic cells.
- G1 Phase: The first of four phases of the cell cycle that takes place in eukaryotic cell division.
External links
- Medical encyclopedia article on Interkinesis
- Wikipedia's article - Interkinesis
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