Main Page

Frae Wikipedia
Jump to navigation Jump to search
Walcome tae Wikipaedia,
the free encyclopaedia that awbody can eedit.
This Scots edeetion wis shapit on 23rd Juin 2005. We hae 55,861 airticles the nou.
Annuncements · Owerview FAQ · Mercat Cross · Commonty Yett · Writin Scots Lessons · Help dask · Contact us

Featurt airticle Featurt airticle

Diagram o a replicatit an condensed metaphase eukaryotic chromosome.

A chromosome (frae auncient Greek: χρωμόσωμα, chromosoma, chroma means colour, soma means bouk) is a DNA molecule wi pairt or aw o the genetic material (genome) o an organism. Maist eukaryotic chromosomes include packagin proteins that, aidit bi chaperone proteins, bind to an condense the DNA molecule tae prevent it frae acomin an unmanageable tangle.

Chromosomes are normally veesible unner a licht microscope anly whan the cell is unnergaein the metaphase o cell diveesion. Afore this happens, ivery chromosome is copied ance (S phase), an the copy is jyned tae the oreeginal bi a centromere, resultin aither in an X-shapit structur (picturt tae the richt) if the centromere is locatit in the middle o the chromosome or a twa-airm structur if the centromere is locatit near ane o the ends. The oreeginal chromosome an the copy are nou cried sister chromatids. In metaphase the X-shape structur is cried a metaphase chromosome. In this heichly condensed form chromosomes are easiest tae distinguish an study. In ainimal cells, chromosomes reach thair heichest compaction level in anaphase in segregation. (Full airticle...)

Current events Newsins

Duane Vermeulen in 2012
Duane Vermeulen

Did ye ken? Did ye ken...

Template:DYK/Dizember 2019

Globe-Star of life.svg Applee'd sciences
Airchitectur (biggin) • Communication Electronics Ingineerin Fermin Heal Industry Medicine Transport Wather
Books-aj.svg aj ashton 01f.svg Fowk an social studies
Anthropology (study o fowk) • Airchaeology (history o ceevilization) • Geography Eddication History Leid Philosophy (abstract thochts) • Psychology Sociology Teachin
Crystal Project colors.png Daily life, airt an cultur
Ainimation Airt Beuk Kuikin Cultur Dance Gemmes Gairdenin Leisur (free time) • Muivin Picturs Muisic Radio Sports Theatre Traivel Televeesion
Naitural sciences an maths
Algebrae Astronomy (starns an space) • Biology (beasts an plants) • Chemistry Computer science Yird science Ecology Geometry Mathematics Pheesics Stateestics Zoology (study o beasts)
Govrenment an law
Copyricht Militar Economics (troke an traffeck) • Govrenment Human richts Laws Militar Politics Troke
Releegions an beliefs
Autheism Bahá'í Buddhism Christianity Esotericism Hinduism Islam Jainism Judaism Meethology Paganism Sect Sikhism Taoism Theology

Wikipedie is hostit bi the Wikimedia Foundation, a nae-profit organization that hosts a reenge o ither projects an aw: