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Metaphase in Biological News

Biology of Reproduction highlights

...os positively correlates with pre-ovulatory follicular testosterone. How exposure of oocytes to follicular testosterone may influence the ability of a metaphase II egg to be preferentially inseminated by a Y-bearing sperm remains a mystery. What is known is that chronic stress elevates testosterone in females ...

Invitrogen Launches i-Path -- A Unique Systems Biology Platform at BIO 2005

...). Until now, scientists investigating human cloning for therapeutic purposes have been limited to using mature eggs (oocytes) that have reached the metaphase II stage (MII) at which ovulation and fertilisation occurs in humans. However, there are few human MII oocytes available for research because almost a...

Scientists succeed in cloning human embryos from eggs matured in the lab

...). Until now, scientists investigating human cloning for therapeutic purposes have been limited to using mature eggs (oocytes) that have reached the metaphase II stage (MII) at which ovulation and fertilisation occurs in humans. However, there are few human MII oocytes available for research because almost a...
Metaphase in Biological Technology

Assessing Gene Function with siRNA Libraries

...nitors the correct, functional interactions between spindle microtubules and kinetochores in preparation for metaphase and subsequent anaphase onset. A second kinase siRNA that also generated cells in mitotic arrest induced the...

Laser microdissection and nucleic acid purification - a Leica - QIAGEN cooperation

... ensuring contaminationfree processing and minimizing sample damage. The Leica AS LMD System enables excision of cells or metaphase chromosomes from a wide range of samples, including paraffin-embedded sections, frozen sections,blood smears, and staine...
Metaphase in Biological Products

SPoT-Light EGFR Probe from Invitrogen

Description:... Intended to qualitatively detect EGFR gene amplification in formalin-fixed, paraffin-embedded (FFPE) tissue sections, metaphase chromosome spreads, and cell preparations, using Chromogenic In Situ Hybridization (CISH). Fluorescent In Situ Hybridization (FISH) may also be used....
Company:Invitrogen
Metaphase in Biological Definition

Metaphase

Metaphase (from the Greek words μετά = after and φάσις = stage) is a stage of mitosis in the eukaryotic cell cycle in which condensed chromosomes align in the middle of the cell before being separated into each of the two daughter cell...

Anaphase

... the nuclear spindle ). Anaphase is preceded by metaphase , by the end of which fully condensed sister chrom...eir centromeres lying along a surface known as the metaphase plate. Spindle fibres (microtubules containing &ga...Complex (APC) becomes activated. This terminates metaphase (M-phase) activity by cleaving and inactivating t...

Chromatin

... interphase with centromere . (4) Condensed chromatin during prophase . (Two copies of the DNA molecule are now present) (5) Chromosome during metaphase . Two distinct types of chromatin can be distinguished: Euchromatin Heterochromatin Chromatin is the extended form of DNA-protein co...

Chromosome

...e . (Two copies of the DNA molecule are now present) (5) Chromosome during metaphase . In the early stages of mitosis, the chromatin strands become more and... the (diploid) number of chromosomes of an organism, cells can be locked in metaphase in vitro (in a reaction vial) with colchicine . These cells are then sta...

Meiosis

...s four chromatids), and the tetrads line up on the metaphase plane . Contents showTocToggle("show","...e") 1 Meiosis I 1.1 ProphaseI 1.2 metaphase I 1.3 Anaphase I 1.4 Telophase 2 Mei... (including their attachment to chromosomes). metaphase I In ...

Mitosis

...ses 2.1 Prophase 2.2 Prometaphase 2.3 metaphase 2.4 Anaphase 2.5 Telophase 3 Endomit...gin searching for kinetochores to attach to. metaphase Main article: metaphase As microtubules find and attach to kinetochores...

Prophase

...he length of the spindle (growing the microtubules), the centrioles push apart to opposite ends of the cell nucleus. See also prometaphase metaphase anaphase telephase ...

Mitosis

...ses 2.1 Prophase 2.2 Prometaphase 2.3 metaphase 2.4 Anaphase 2.5 Telophase 3 Endomit...gin searching for kinetochores to attach to. metaphase Main article: metaphase As microtubules find and attach to kinetochores...
Metaphase in Biological Dictionary

Metaphase

Metaphase , from the ancient Greek μετά (between) and φάσις (stage), is a stage of mitosis in the eukaryotic cell cycle in which condensed & highly coiled chromosomes, carrying genetic information, align in the middle of the cell before being separated into each of the... (Redirected ...

Spindle Fibers

...dictionary. spindle fibers spindle poles nbsp nbsp nbsp nbsp nbsp metaphase plate chromatids: ... Spindle fibers extend from the cell poles to a...ach other (pushing the poles farther ... ... to align in one plane (the metaphase plate) halfway between the spindle poles. ... The mitotic spindle cont...

Sister Chromatids

...chromatids are held ... phenomenon, called sister - chromatid cohesion, enables cells to ... of sister chromatids to opposite ... Mitotic metaphase chromosomes show sister chromatids ... of sister - chromatid cohesion is ... Consequently, the sister chromatids separate and segregate t...

Sister chromatid

...er chromatid antonyms. Information about Sister chromatid ... chromatid (redirected from Sister chromatid ) Also found in: ... Mitotic metaphase chromosomes show sister chromatids ... The maintenance of sister - chromatid cohesion is essential to ... the sister chromatids separate ...

Secondary oocyte

... secondary Oocyte . haploid. Ootidogenesis (meiosis 2) Halted in metaphase II until fertilization ... with formation of a polar body and a seco... Genetically, the secondary oocyte that arrives in the oviduct is in metaphase of ... Oocyte summary with 3 pages of encyclopedia entries, essays, s...

Ribosomal DNA genes

...osomal DNA Genes Requires Targeting of UAF to ... Chromatin Assembly onto Active Ribosomal Genes in Yeast after UV ... ... counterpart of metaphase NORs, therefore being constituted by ribosomal DNA . ... The transcription unit DNA of transcribing ribosomal genes is in a completely ......

Pseudoautosomal regions

...et Dev. ... A novel class of Pseudoautosomal region 1 deletions downstream of SHOX is ... Pseudoautosomal region Detail of a human metaphase spread. ... The pseudoautosomal regions , SHOX and disease. Curr Opin Genet Dev. ... pseudoautosomal ( ¦südō′ödō′sōməl ) ( genetics ) Perta...

Prometaphase

...e begins with the disruption of the nuclear ... A summary of Prophase and Prometaphase in 's Mitosis. ... Prophase and Prometaphase . Problems. metaphase and Anaphase. Problems. Telophase and Cytokinesis ... Includes images and a QuickTime animation of the process. ... Prometaphase . The nuclear me...

Pachytene

...achytene arrest also requires the meiosis-specific Red1 and Mek1 proteins (14) ... Meiotic pachytene bivalents are much longer than somatic metaphase chromosomes ... Detailed pachytene BAC-FISH analysis of sorghum chromosome 1 by Islam-Faridi et al. ... What is pachytene ? Meaning of pac...

Micronucleus

... Loats Associates, Inc. creates systems for medical research, specializing in the automation of genetic toxicity assays; micronuclei assay, comet, metaphase spread ... micronucleus ... micronucleus - A nucleus, distinct from and smaller than the main nucleus, but ... News archive for micronucleus ...
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