Navigation Links
Meiosis in Biological News

Is this the beginning of the end of plant breeding?

... only half of the parental amount of DNA. meiosis occurs in all species that reproduce sexually, ... introduces. The first steps of both meiosis and mitosis are the replication of the dividing ... X. Thus the differences between mitosis and meiosis are ...

Yeast missing sex genes undergo unexpected sexual reproduction

... learned that forms of Candida yeast undergo meiosis but generate offspring of several types. About ... arise." Heitman said that Candida 's meiosis without meiotic genes may be what gives rise to ... are the unfortunate consequence of undergoing meiosis without the machinery that species normally have ...

Stowers Institute's Hawley Lab identifies factors responsible for restart of meiotic cycle

... females develop during fetal development and begin the actual process of meiosis before birth, but the oocytes remain in a suspended state until the female ... oocyte development is arrested for 3-4 days at exactly the same point in meiosis as in humans. The long period of meiotic arrest has mystified ...

How chromosomes meet in the dark -- Switch that turns on X chromosome matchmaking

... successful. The researchers believe that this newly discovered "thermodynamic switch" not only explains how X chromosomes pair up during meiosis but also apply to a range of other cell processes that involve the recognition and pairing of DNA sequences including other homologous chromosomes. ...

Rong Li Lab probes mechanism of asymmetry in meiotic cell division

... The Stowers Institute's Rong Li Lab has characterized a mechanism that allows for asymmetrical cell division during meiosis in oocytes. By tracking chromosome movement in live mouse oocytes, the team discovered that chromosomes can recruit to their vicinity a protein ...

New clues to how sex evolves

... of the two copies most cells carry. During meiosis a cell replicates and then divides twice, ... eggs with just one set of chromosomes each. For meiosis to work properly, corresponding chromosomes must ... in length, admirably suited to the study of meiosis because it is completely transparent and ...

What controls stickiness of 'smart' chromosomal glue

... pairs of chromosomes at precisely the moment of meiosis ?the specialized cell division process that ... knowledge of the mechanism of cohesin loss during meiosis could ultimately improve understanding of the ... one another's embrace quite differently during meiosis and mitosis. In mitosis, cohesins release ...

One big biology question solved

... an egg or a sperm depends on the time at which meiosis begins," Professor Koopman said. "In females, meiosis begins before birth and eggs are produced, whereas in males, meiosis begins after birth and the result is sperm." ...

Researchers find gene mutation that causes infertility in male mice

... The mutation leads to a change in an amino acid in Dmc1 that blocks meiosis in its tracks, preventing sperm production. The mutant allele (one version ... reports that in some patients, a sequence change in this or other meiosis genes might cause a dominant defect in function, but until now there has ...

Mother birds increase progesterone to hatch females

... of higher-than-normal levels of the hormone progesterone during the first meiosis -- the cell division that divides the sex chromosomes and genetically ... that how much progesterone the female follicle produces during the first meiosis is the mechanism in birds that manipulates the sex ratio of offspring," ...

Early-stage sperm cells created from human bone marrow

... also created spermatagonial cells from mouse bone marrow. The cells were transplanted into mouse testes and were observed to undergo early meiosis - cell division - the next stage to them becoming mature sperm cells, although they did not develop further. Talking about his newly published ...

Mitochondrial genes move to the nucleus -- but it's not for the sex

... pollen, via meiosis. But the mating system determines whether or not this separation is permanent. With self-pollination, the components separated by meiosis are brought back together. In contrast, the components are further separated if they mix and match haphazardly during out-crossing. Brandvain ...

Scientists discover role for dueling RNAs

... in haploid cells because they continually produce IME4 antisense RNA, blocking the production of sense RNA. Antisense IME4, then, safeguards against meiosis in cells that can't handle it. "This is the first time that we've found a function for antisense RNA, that is not RNAi, in a higher cell ...

Needling Chromosomes Reveals Cell Division Secret

... operates in normal cell division, called mitosis, as well as the proliferation of sperm and egg cells called meiosis. "Chromosomes in mitosis and meiosis have to be held together, because otherwise they don’t attach to the apparatus called the spindle that distributes them to opposite poles," explained ...
Other Contents
(Date:7/10/2014)... The Marshall Institute for Interdisciplinary Research (MIIR) ... of Medicine today announced they will be partnering ... anti-cancer drugs. , Under the agreement with Shanghai-based ... share the costs and risks of discovery and ... jointly own any intellectual property and commercialization rights ...
(Date:7/10/2014)... controversy centres around a family of enzymes known as ... group in their active site. At the centre of ... becomes oxidised (ferryl) when a reacting heme is in ... has remained unanswered for decades is whether this oxidation ... group (OH). Resolving this fundamental question has implications for ...
(Date:7/10/2014)... GOES-West satellite spotted smoke over the U.S. Mid-West ... Territories. , At 1200 UTC (8 a.m. EDT) ... of the brownish-colored haze created by forest fires ... way into South Dakota. This image was created ... Space Flight Center, Greenbelt, Md. , According ...
Breaking Biology News(10 mins):Marshall University to partner with international company in drug development venture 2Neutron crystallography solves long-standing biological mystery 2Neutron crystallography solves long-standing biological mystery 3
(Date:7/11/2014)... IN (PRWEB) July 11, 2014 New Albany ... be startled with the idea of paying $20,000 for new teeth. ... makes it worth it for many patients,” Dr. Receveur said. , ... foods they love, or have a lifetime of embarrassment over their ... – they’re paying for a better, more enjoyable life. , Still, ...
(Date:7/10/2014)... CO (PRWEB) July 11, 2014 Karen ... Cowart, President and CEO of Planned Parenthood of the ... fact Senator Mark Udall and Representative Diana DeGette were ... Supreme Court’s Hobby Lobby decision and keeping bosses out ... PPRM representatives listened to the president today in Denver ...
(Date:7/10/2014)... 10, 2014 Ticketability.com has a wide array ... Paul McCartney tickets for San Diego are being added to ... since 1976, and the newly added September 28 show is ... Click Here to view the selection of discounted ... Park will become available to the general public on July ...
(Date:7/10/2014)... York City, NY (PRWEB) July 10, 2014 ... the life sciences industry, has launched a new website. ... responsiveness, as well as increased access to the firm’s ... new cbpartners.com provides an ideal platform to showcase our ... health access issues,” says CBPartners’ Chief Executive Officer, Cyrus ...
(Date:7/10/2014)... 10, 2014 Ivalua, the global ... of the 4th “Trending in Procurement” report on ... , Every day multinational corporations process thousands of ... etc. To meet this challenge, more and more ... can be defined as a suite of integrated ...
Breaking Medicine News(10 mins):Health News:Louisville Dental Expert Offers 5 Tips for Deciding Whether Cost or Value of Dental Implants are More Important 2Health News:Louisville Dental Expert Offers 5 Tips for Deciding Whether Cost or Value of Dental Implants are More Important 3Health News:Louisville Dental Expert Offers 5 Tips for Deciding Whether Cost or Value of Dental Implants are More Important 4Health News:Naral Pro-Choice Colorado & Planned Parenthood Of The Rocky Mountains Statement On Udall & Degette Staying In Dc To Introduce Legislation 2Health News:Paul McCartney Tickets for San Diego: Ticketability.com Announces Discounted Tickets for McCartney’s Tour Stop at Petco Park on September 28 2Health News:CBPartners Announces New Website 2Health News:‘Source-to-Pay’ e-Procurement Is Real Performance Driver for Purchasing Departments 2Health News:‘Source-to-Pay’ e-Procurement Is Real Performance Driver for Purchasing Departments 3
Other TagsOther Tags