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  • Fetal
  • To gain further insight into which misexpressions might be involved, we examined some of the misexpressions that could determine the small size and fetal death of a "partial parthenogenone"-embryos with maternal duplication of distal Chr 7 (MatDup.dist7). (plos.org)
  • dup15q
  • Dup15q Alliance formally endorses and funds research and collaborates with researchers interested in research on chromosome 15q duplications by disseminating research information and promoting opportunities for Dup15q Alliance families to participate in research studies. (dup15q.org)
  • trisomy
  • At least 5-8 highly polymorphic STR markers specific for chromosome 21 will be tested to minimize the effects of a phenomenon called allele drop out, in which one allele fails to amplify, and to maximize the number of triallelic signals for an accurate diagnosis of disomy or trisomy 21. (clinicaltrials.gov)
  • genome
  • Eight gene families had complications that precluded analysis (such as short sequence length or variable number of repeated domains) and another eight families did not support block duplications (because the paralogs in these families seem to have originated in another time window than the proposed genome duplication events). (biomedcentral.com)
  • One type of duplication occurs when the RNA transcript of a gene is "reverse transcribed" back into a DNA sequence and reinserted elsewhere in the genome (a process called retroposition), leading to a new, possibly functional copy of the gene in a new location and subject to different regulatory systems. (jrank.org)
  • While gene duplication is a rare event in the short term, it is frequent enough in the long term to have been a central feature in the evolution of the genome of eukaryotic organisms. (jrank.org)
  • locus
  • Chromosome loss followed by duplication is the major mechanism of spontaneous mating-type locus homozygosis in Candida albicans. (nih.gov)
  • Candida albicans, which is diploid, possesses a single mating-type (MTL) locus on chromosome 5, which is normally heterozygous (a/alpha). (nih.gov)
  • Eighteen polymorphic (heterozygous) markers were identified on chromosome 5, 6 to the left and 12 to the right of the MTL locus. (nih.gov)
  • Search
  • To our knowledge and search in English literature there are less than 20 reported cases of isolated 2q duplication. (ac.ir)
  • exchanges
  • Although radiation-induced chromosome exchanges are not distributed among cells according to a Poisson distribution, chromatid interchanges are. (sciencemag.org)
  • results
  • The chromosome duplication results in Gene Redundancy . (botanystudies.com)
  • The results demonstrate that while mitotic recombination was the mechanism for homozygosis in one offspring, loss of one chromosome 5 homolog followed by duplication of the retained homolog was the mechanism in the remaining 15 offspring, indicating that the latter mechanism is the most common in the spontaneous generation of MTL homozygotes in natural strains of C. albicans in culture. (nih.gov)
  • gene conversion
  • Three possible mechanisms may be used in this process, mitotic recombination, gene conversion, or loss of one chromosome 5 homolog, followed by duplication of the retained homolog. (nih.gov)
  • Considering both gene conversion and crossing over on the Y, recombination can be viewed as a factor that either constrains (via gene conversion) or promotes (via crossing over) Y chromosome degeneration. (genetics.org)