tetrad
the four homologous chromatids in a bundle during the prophase and metaphase of meiosis
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
A tetrad in which the meiotic products are in no particular order.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Tetrad analysis
A method for establishing linkage relationships in fungi by analysing the four products from individual meiotic divisions.
Tetrad
The four products of a single meiosis.
tetrad
[Gk. tetras, four]
In genetics, a pair of homologous chromosomes that have replicated and come together in prophase I of meiosis; consists of four chromatids.
tetrapod ...
tetrad The four chromatids in each cluster during synapsis; formed by the two sister chromatids in each of the two homologous chromosomes. PICTURE ...
Tetrad
The four haploid cells formed at the end of meiosis. The term was formerly used for the four chromatids making up a chromosome-pair at the first division of meiosis.
Related Terms:
Haploid ...
tetrad A pair of homologous chromosomes during synapsis (prophase I of meiosis). A tetrad consists of four chromatids.
tetrapods A nontaxonomic designation used to refer to amphibians, reptiles, birds, and mammals.
Bivalents (tetrads) become aligned in the center of the cell and are attached to spindle fibers.
The chromosome alignment illustrated below is from a cell with a diploid chromosome number of 8.
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Metaphase I is when tetrads line-up along the equator of the spindle. Spindle fibers attach to the centromere region of each homologous chromosome pair. Other metaphase events as in mitosis.
[More] Tetracycline antibiotics Tetracycline response element Tetrad(1) The duplicated homologous chromosomes held together by chiasmata prior to anaphase of meiosis I. Each tetrad contains four chromatids.
In reality, however, the number is doubled, since each chromosome consists of four granules grouped to form a tetrad.
We are developing technology to monitor changes protein expression in single tetrads of D. radiodurans following exposure to ionizing radiation.
"[1] This is the first point in meiosis where the four parts of the tetrads are actually visible. Sites of crossing over entangle together, effectively overlapping, making chiasmata clearly visible.
A pair of Staphylococcus aureus have gone through 2 cell divisions, producing a pair of tetrads. Cell division in this and other bacteria can occur every 20 to 30 minutes. Elsewhere on this site, you can learn about the dynamics of bacterial growth.
Bivalent a pair of homologous chromosomes during meiosis‚ also known as a tetrad
(bi = two; valent = strength)
Blastocyst the hollow ball stage of embryonic development
(blasto = bud‚ sprout) ...
AP-1 is actually a complex between c-fos protein and c-jun protein, or sometimes is just c-jun dimers. The AP-1 site consensus sequence is (C/G)TGACT(C/A)A. Also known as the TPA-response element (TRE). [TPA is a phorbol ester, tetradecanoyl phorbol ...
 See also: Cells, Human, Cell, Division, Animal
  
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