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- B_chromosome abstract "In addition to the normal karyotype, wild populations of many animal, plant, and fungi species contain B chromosomes (also known as supernumerary or accessory chromosomes). By definition, these chromosomes are not essential for the life of a species, and are lacking in some (usually most) of the individuals. Thus a population would consist of individuals with 0, 1, 2, 3 (etc.) supernumeraries.Most B chromosomes are mainly or entirely heterochromatic (and so would be largely non-coding), but some, such as the B chromosomes of maize, contain sizeable euchromatic segments. In general it seems unlikely that supernumeraries would persist in a species unless there was some positive adaptive advantage, which in a few cases has been identified. For instance, the British grasshopper Myrmeleotettix maculatus has two structural types of B chromosomes: metacentrics and submetacentrics. The supernumeraries, which have a satellite DNA, occur in warm, dry environments, and are scarce or absent in humid, cooler localities.B chromosomes are not to be confused with marker chromosomes or additional copies of normal chromosomes as they occur in Trisomies.".
- B_chromosome thumbnail Metaphase_spread_of_the_Siberian_Roe_deer_(Capreolus_pygargus).jpg?width=300.
- B_chromosome wikiPageExternalLink produkte.asp?Aktion=Ausgabe&ProduktNr=224037&Ausgabe=230275.
- B_chromosome wikiPageExternalLink produkte.asp?typ=fulltext&file=CGR20041062_4332.
- B_chromosome wikiPageExternalLink Camacho%20et%20al.%20Bchromosomes.pdf.
- B_chromosome wikiPageExternalLink pmidlookup?view=long&pmid=10724453.
- B_chromosome wikiPageExternalLink art.pdf?issn=0016-6707&volume=117&page=77.
- B_chromosome wikiPageExternalLink art.pdf?issn=0967-3849&volume=11&page=115.
- B_chromosome wikiPageExternalLink index.php.
- B_chromosome wikiPageID "2606404".
- B_chromosome wikiPageLength "11153".
- B_chromosome wikiPageOutDegree "22".
- B_chromosome wikiPageRevisionID "659800719".
- B_chromosome wikiPageWikiLink Allopolyploidy.
- B_chromosome wikiPageWikiLink Astatotilapia_latifasciata.
- B_chromosome wikiPageWikiLink Category:Genetics.
- B_chromosome wikiPageWikiLink Chromosome.
- B_chromosome wikiPageWikiLink Chromosomes.
- B_chromosome wikiPageWikiLink Euchromatin.
- B_chromosome wikiPageWikiLink Fungi.
- B_chromosome wikiPageWikiLink Fungus.
- B_chromosome wikiPageWikiLink Genetic_polymorphism.
- B_chromosome wikiPageWikiLink Grasshopper.
- B_chromosome wikiPageWikiLink Haematonectria_haematococca.
- B_chromosome wikiPageWikiLink Haplochromis_latifasciatus.
- B_chromosome wikiPageWikiLink Heterochromatin.
- B_chromosome wikiPageWikiLink Horizontal_gene_transfer.
- B_chromosome wikiPageWikiLink Karyotype.
- B_chromosome wikiPageWikiLink Marker_chromosome.
- B_chromosome wikiPageWikiLink Michael_J._D._White.
- B_chromosome wikiPageWikiLink Michael_JD_White.
- B_chromosome wikiPageWikiLink Myrmeleotettix_maculatus.
- B_chromosome wikiPageWikiLink Phytoalexin.
- B_chromosome wikiPageWikiLink Polymorphism_(biology).
- B_chromosome wikiPageWikiLink Polyploid.
- B_chromosome wikiPageWikiLink Rye.
- B_chromosome wikiPageWikiLink Satellite_DNA.
- B_chromosome wikiPageWikiLink Species.
- B_chromosome wikiPageWikiLink The_Evolution_of_the_Genome.
- B_chromosome wikiPageWikiLink Trisomy.
- B_chromosome wikiPageWikiLink File:Metaphase_spread_of_the_Siberian_Roe_deer_(Capreolus_pygargus).jpg.
- B_chromosome wikiPageWikiLinkText "B chromosome".
- B_chromosome wikiPageWikiLinkText "B-chromosomes".
- B_chromosome hasPhotoCollection B_chromosome.
- B_chromosome wikiPageUsesTemplate Template:About.
- B_chromosome wikiPageUsesTemplate Template:Chromosome_genetics.
- B_chromosome wikiPageUsesTemplate Template:Cite_book.
- B_chromosome wikiPageUsesTemplate Template:Cite_journal.
- B_chromosome wikiPageUsesTemplate Template:No_footnotes.
- B_chromosome wikiPageUsesTemplate Template:Reflist.
- B_chromosome subject Category:Genetics.
- B_chromosome type Article.
- B_chromosome type Article.
- B_chromosome comment "In addition to the normal karyotype, wild populations of many animal, plant, and fungi species contain B chromosomes (also known as supernumerary or accessory chromosomes). By definition, these chromosomes are not essential for the life of a species, and are lacking in some (usually most) of the individuals.".
- B_chromosome label "B chromosome".
- B_chromosome sameAs Cromosoma_B.
- B_chromosome sameAs B-Chromosom.
- B_chromosome sameAs Cromosomas_B.
- B_chromosome sameAs Chromosomy_B.
- B_chromosome sameAs m.07r8rr.
- B_chromosome sameAs Q900901.
- B_chromosome sameAs Q900901.
- B_chromosome sameAs 超数染色体.
- B_chromosome wasDerivedFrom B_chromosome?oldid=659800719.
- B_chromosome depiction Metaphase_spread_of_the_Siberian_Roe_deer_(Capreolus_pygargus).jpg.
- B_chromosome isPrimaryTopicOf B_chromosome.