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- Acentric_fragment abstract "An acentric fragment is a segment of a chromosome that lacks a centromere.Because the centromere is the point of attachment for the mitotic apparatus, acentric fragments are not evenly distributed to the daughter cells in cell division (mitosis and meiosis). As a result, one of the daughters will lack the acentric fragment.Lack of the acentric fragment in one of the daughter cells may have deleterious consequences, depending on the function of the DNA in this region of the chromosome. In the case of a haploid organism or a gamete, it will be fatal if essential DNA is contained in that DNA segment. In the case of a diploid organism, the daughter cell lacking the acetric fragment will show expression of any recessive genes found in the homologous chromosome. Developmental geneticists look to cells and cell lineages lacking unpaired chromosome segments produced this way as a means of identifying essential genes for specific functions.Acentric fragments are commonly generated by chromosome-breaking events, such as irradiation. As the fragment happens there is unequal divisions of such fragments.Acentric fragments can also be produced when an inverted segment is present in one member of a chromosome pair. In that case, a crossover event will result in one chromosome with two centromeres and an acentric fragment. The acentric fragment will be lost as explained above, and chromosomes with two centromeres will break unevenly during mitosis, resulting in one daughter lacking essential genes.".
- Acentric_fragment wikiPageID "3716332".
- Acentric_fragment wikiPageLength "2152".
- Acentric_fragment wikiPageOutDegree "14".
- Acentric_fragment wikiPageRevisionID "678337139".
- Acentric_fragment wikiPageWikiLink Category:Classical_genetics.
- Acentric_fragment wikiPageWikiLink Cell_division.
- Acentric_fragment wikiPageWikiLink Centromere.
- Acentric_fragment wikiPageWikiLink Chromosomal_inversion.
- Acentric_fragment wikiPageWikiLink Chromosome.
- Acentric_fragment wikiPageWikiLink Dominance_(genetics).
- Acentric_fragment wikiPageWikiLink Gamete.
- Acentric_fragment wikiPageWikiLink Irradiation.
- Acentric_fragment wikiPageWikiLink Meiosis.
- Acentric_fragment wikiPageWikiLink Mitosis.
- Acentric_fragment wikiPageWikiLink Ploidy.
- Acentric_fragment wikiPageWikiLink Segmentation_(biology).
- Acentric_fragment wikiPageWikiLink Unpaired.
- Acentric_fragment wikiPageWikiLinkText "Acentric fragment".
- Acentric_fragment wikiPageWikiLinkText "acentric fragment".
- Acentric_fragment subject Category:Classical_genetics.
- Acentric_fragment hypernym Segment.
- Acentric_fragment type TelevisionEpisode.
- Acentric_fragment comment "An acentric fragment is a segment of a chromosome that lacks a centromere.Because the centromere is the point of attachment for the mitotic apparatus, acentric fragments are not evenly distributed to the daughter cells in cell division (mitosis and meiosis). As a result, one of the daughters will lack the acentric fragment.Lack of the acentric fragment in one of the daughter cells may have deleterious consequences, depending on the function of the DNA in this region of the chromosome.".
- Acentric_fragment label "Acentric fragment".
- Acentric_fragment sameAs Q4673085.
- Acentric_fragment sameAs m.09wxcp.
- Acentric_fragment sameAs Q4673085.
- Acentric_fragment wasDerivedFrom Acentric_fragment?oldid=678337139.
- Acentric_fragment isPrimaryTopicOf Acentric_fragment.