(PhysOrg.com) -- The effort to classify life into various groups has been a bumpy ride. Prior to the 1900s, living things were usually pegged as either plants or animals – period. By the middle of the 20th century, ...
The human body contains trillions of cells, all derived from a single cell, or zygote, made by the fusion of an egg and a sperm. That single cell contains all the genetic information needed to develop into a human, and passes ...
Cell & Microbiology
May 5, 2013
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A recent Northwestern Medicine study published in the Journal of Cell Biology has identified new mechanisms that cause genomic or chromosomal instability during cell division, findings that may improve the development of ...
Cell & Microbiology
Jun 13, 2023
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NUS researchers have discovered that a microtubule-associated protein, HMMR, acts as a regulator in controlling chromosome segregation during cell division, an event that is critical for genome stability.
Cell & Microbiology
Dec 13, 2021
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The exchange of DNA between chromosomes during the early formation of sperm and egg cells normally is limited to assure fertility.
Biotechnology
Oct 8, 2020
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For some cells, context is everything. Cells plucked out of their native environs have trouble divvying up their chromosomes correctly, Howard Hughes Medical Institute Investigator Angelika Amon and colleagues have found.
Cell & Microbiology
Aug 23, 2018
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Diane Shakes shakes her head. A trisexual arrangement is really not so different. Three sexes—male, female and hermaphrodite—are "part of the plan" for many organisms. There's even a word for it: trioecious.
Plants & Animals
Jan 18, 2018
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Northwestern Medicine scientists have revealed the role amino-terminal methylation plays in a specific protein in the centromere, a region of the chromosome important in cell division, and how the dysregulation of this protein ...
Biochemistry
Apr 19, 2017
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Whitehead Institute researchers have revealed the architecture of a protein complex that plays a foundational role in the machine that directs chromosome segregation during cell division.
Cell & Microbiology
Nov 19, 2015
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From fertilized egg to adult, the cells of the human body go through an astronomical number of divisions. During division of any of the body's roughly 30 trillion cells, DNA from the initial cell must be split precisely between ...
Cell & Microbiology
Jul 17, 2014
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Chromosome segregation is a step in cell reproduction or division, where chromosomes pair off with their similar homologous chromosome. In mitosis, a complete copy of each one is made. In meiosis, one chromosome from each pair migrates to opposite ends of the cell and the genes are split to make a gamete.
For more information see the Cell Cycle.
This text uses material from Wikipedia, licensed under CC BY-SA
