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- Ploidy abstract "Ploidy is the number of sets of chromosomes in the nucleus of a cell. Normally a gamete (sperm or egg) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n) i.e. two copies of autosomal chromosomes. However, the sex chromosomes of diploid cells (excluding pseudoautosomal regions), which are subject to sex linkage, may be considered as haploid chromosomes, since haploid is also the term used to define a set of chromosomes with only one copy in the cell. For humans, a diploid species, x = n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs. Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).".
- Ploidy thumbnail Haploid_vs_diploid.svg?width=300.
- Ploidy wikiPageExternalLink index.html.
- Ploidy wikiPageExternalLink www.genomesize.com.
- Ploidy wikiPageExternalLink 11036.full.
- Ploidy wikiPageExternalLink 03151DataSet1.pdf.
- Ploidy wikiPageExternalLink homepage.html.
- Ploidy wikiPageExternalLink fungal-genomesize.
- Ploidy wikiPageExternalLink watch?v=GfxJi2BUvNI.
- Ploidy wikiPageID "23219".
- Ploidy wikiPageRevisionID "605496651".
- Ploidy hasPhotoCollection Ploidy.
- Ploidy subject Category:Classical_genetics.
- Ploidy subject Category:Cytogenetics.
- Ploidy comment "Ploidy is the number of sets of chromosomes in the nucleus of a cell. Normally a gamete (sperm or egg) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n) i.e. two copies of autosomal chromosomes.".
- Ploidy label "Ploidia".
- Ploidy label "Ploidia".
- Ploidy label "Ploidia".
- Ploidy label "Ploidiegrad".
- Ploidy label "Ploidy".
- Ploidy label "Ploidía".
- Ploidy label "Ploïdie".
- Ploidy label "Ploïdie".
- Ploidy label "Плоидность".
- Ploidy label "倍数性".
- Ploidy label "染色體倍性".
- Ploidy sameAs Ploidie.
- Ploidy sameAs Ploidiegrad.
- Ploidy sameAs Ploidía.
- Ploidy sameAs Ploïdie.
- Ploidy sameAs Haploid.
- Ploidy sameAs Ploidia.
- Ploidy sameAs 倍数性.
- Ploidy sameAs 배수성.
- Ploidy sameAs Ploïdie.
- Ploidy sameAs Ploidia.
- Ploidy sameAs Ploidia.
- Ploidy sameAs m.05s53.
- Ploidy sameAs Q118406.
- Ploidy sameAs Q118406.
- Ploidy wasDerivedFrom Ploidy?oldid=605496651.
- Ploidy depiction Haploid_vs_diploid.svg.
- Ploidy isPrimaryTopicOf Ploidy.