Encyclopedia > Polyploid

  Article Content


Polyploid cells are cells containing multiple copies of their chromosomes. This often occurs in plants: wheat, for example, after millennia of hybridization[?] and modification by humans, has strains that are triploid, with three copies of each chromosomne, and tetraploid, with four copies.

Polyploidy can be induced in cell culture by some chemicals: the best known is Colchicine[?], which causes chromosome doubling.

See also : ploidy -- biology -- genetics

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Alec Guiness

... in the Royal Navy. He is mainly associated with the Ealing Comedies[?], and particularly for playing 12 parts in Kind Hearts and Coronets[?]. Other films from ...