(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, ...
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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508
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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Lars Jansen's work on the formation of the centromere, a key cellular structure in powering and controlling chromosome segregation and accurate cell division, has just earned him a paper in Nature Cell Biology and a prestigious ...
Cell & Microbiology
Jul 1, 2009
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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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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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Researchers at the Cell Cycle Research Group of the Bellvitge Institute of Biomedical Research (IDIBELL) led by Ethel Queralt have reported in the journal PLoS Genetics an article which delve into the regulator mechanisms ...
Biotechnology
Dec 11, 2013
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Researchers at Waseda University in Japan have for the first time directly observed the "molecular motor", called Xkid, that plays a critical role in facilitating the proper alignment of chromosomes during cell division. ...
Cell & Microbiology
Nov 26, 2013
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(PhysOrg.com) -- Biologist Barbara Mellone uses tiny cameras to study what happens when a dividing cell makes a mistake.
Cell & Microbiology
Sep 20, 2010
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When cells divide, chromosomes need to be evenly segregated between daughter cells. This equal distribution of chromosomes is very important to accurately pass on genetic information to the next generation. Abnormal chromosomal ...
Biotechnology
Mar 22, 2017
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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.
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