Dictionary » S » Segmentation

Segmentation

Definition

noun, plural: segmentation

(1) (embryology) Cleavage, i.e. the repeated division of a fertilized ovum forming blastomeres

(2) (zoology) The division of animal or plant body into repetitive segments; metamerism or the state of developing segments or a series of repeating parts

(3) (general) The condition or act of partitioning or dividing into repeated parts or segments


Supplement

In zoology, segmentation refers to the division of a body part into segments. It may be homomeric segmentation in which the segments are more or less the same, or heteromeric segmentation wherein the segments differ from one another.


Word origin: Latin segmentum + atio (process)

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Please check my work?

... C a notochord. D an anus. is it A? Three common characteristics of adult vertebrates are A skull, notochord, and complex organ system. B backbone, segmentation, and open circulatory system. C two pairs of jointed appendages, cephalization, and internal skeleton. D hydrostatic skeleton, bilateral ...

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by radicali
Thu Jun 14, 2012 8:57 pm
 
Forum: General Discussion
Topic: Please check my work?
Replies: 1
Views: 2875

Theories - Origin of Life

... the segmented nature of the body plan of the fruit fly has changed throughout it's existence, regardless of how rapid its generation time may be. Segmentation is perhaps the most successful body plan in existence. The three-segment body plan of the insects has not significantly changed since their ...

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by AstraSequi
Tue Mar 27, 2012 2:32 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929018

Re: Theories - Origin of Life

... about isochores for over 25 years, we still have a poor understanding of why they exist. So an outstanding feature of eukaryote genomes is this segmentation of the DNA into these isochore r egions, each with a distinctive species specific base composition. Therefore to view the genome without ...

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by scottie
Tue Jan 03, 2012 12:15 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929018

Re: Theories - Origin of Life

... Although I'm sure there are more that exist, the only genes I have been taught about are the Hox genes, commonly studied for their effects on segmentation in Drosophilia. You'd also ask how the increase in noncoding DNA ties in with this. Well, since a good number of noncoding DNA sequences ...

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by awkko808
Fri Dec 23, 2011 1:36 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929018

RI Technologies – Unique Research Collection

... insight reports focus on the technology and application areas of the market. The reports provide essential information including market data, segmentation, market size, key trends, M&A, industry forecasts, corporate intelligence, and several other relevant information. Content in these ...

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by researchimpact
Mon Oct 03, 2011 9:54 am
 
Forum: General Discussion
Topic: RI Technologies – Unique Research Collection
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