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Latest Meiosis Stories

2014-04-03 11:21:51

Stowers team reports genome-wide analysis of genes that drive cell division in a multicellular organism In textbooks, the grand-finale of cell division is the tug-of-war fought inside dividing cells as duplicated pairs of chromosomes get dragged in opposite directions into daughter cells. This process, called mitosis, is visually stunning to observe under a microscope. Equally stunning to cell biologists are the preparatory steps cells take to ensure that the process occurs safely....

2014-03-18 00:20:22

First win for Singapore in annual GE Healthcare Life Sciences cell imaging competitionSingapore, 3/18 - Mouse spermatocyte[1] stained for two proteins - KASH-5 (red) and SCP3 (green) - and DNA (blue) illuminates understanding on fertilitySingapore, Mar 18, 2014 - (ACN Newswire) - Drs Graham Wright and Henning Horn from A*STAR's Institute of Medical Biology (IMB) are the Asia-Pacific winners in the microscopy category at the 2013 GE Cell imaging competition. With over 23,000 votes cast by...

Brown University
2014-01-06 08:12:29

Brown University Mating and meiosis – the specialized cell division that reduces the number of chromosomes in a cell – are related, but in most yeasts they are regulated separately. Not so in Candida lusitaniae, where the two programs work in unison, according to a new study in Nature. Comparison with other species suggests that this fusion may support C. lusitaniae’s “haploid lifestyle” of maintaining only one set of chromosomes in each cell. From a biological point of view,...

Two Y Genes Can Replace Entire Y Chromosome For Assisted Reproduction In Mice
2013-11-21 15:33:20

University of Hawaii at Manoa The Y chromosome is a symbol of maleness, present only in males and encoding genes important for male reproduction. But live mouse offspring can be generated with assisted reproduction using germ cells from males with the Y chromosome contribution limited to only two genes: the testis determinant factor Sry and the spermatogonial proliferation factor Eif2s3y. "Does this mean that the Y chromosome (or most of it) is no longer needed? Yes, given our current...

2012-07-30 06:27:33

(Ivanhoe Newswire) — Is your biological clock about to run out? While women have always thought they are born with all of the eggs they need, new research says, that´s not true! A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women arises from the fact that oocytes progressively decline in number as females...

2012-07-27 12:24:01

A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women arises from the fact that oocytes progressively decline in number as females get older,...

2012-04-30 14:13:53

Gene Is Involved in Fanconi Anemia — Thale Cress as Model Organism Scientists of KIT and the University of Birmingham have identified relevant new functions of a gene that plays a crucial role in Fanconi anemia, a life-threatening disease. The FANCM gene is known to be important for the stability of the genome. Now, the researchers found that FANCM also plays a key role in the recombination of genetic information during inheritance. For their studies, the scientists used thale cress...

Sex, Tools And Chromosomes
2012-04-12 10:28:06

Researchers at the University of California, Davis have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each. The work, which could lead to insights into fertility, spontaneous miscarriages, cancer and developmental disorders, is published April 13 in the journal Cell. Healthy humans have 46 chromosomes, 23 from the sperm and 23 from the egg. An embryo with the wrong number of chromosomes is usually miscarried, or develops disorders such as Down's syndrome,...

How Chromosomes Find Each Other
2011-11-02 09:09:55

[ Watch the Video ] After more than a century of study, mysteries still remain about the process of meiosis–a special type of cell division that helps insure genetic diversity in sexually-reproducing organisms. Now, researchers at Stowers Institute for Medical Research shed light on an early and critical step in meiosis. The research, to be published in the Nov. 8, 2011 issue of Current Biology, clarifies the role of key chromosomal regions called centromeres in the formation of a...

2011-10-06 13:08:46

In children with genomic disorders, often a gamete — egg or sperm — has gone disastrously awry with either a duplication or deletion of genetic material that results in physical and neurological problems for the subsequent child. Previous studies have identified a procedure called nonallelic homologous recombination, which occurs during meiosis or sexual cell division, as the event that most commonly occurs and results in this mistake in DNA. Researchers from Baylor College...


Word of the Day
siliqua
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'
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