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Meiotic Crossover Patterning in Drosophila melanogaster.- [electronic resource]
Meiotic Crossover Patterning in Drosophila melanogaster. - [electronic resource] / Hartman...
Meiotic Crossover Patterning in Drosophila melanogaster.- [electronic resource]

상세정보

자료유형  
 학위논문(국외)
자관 청구기호  
기본표목-개인명  
표제와 책임표시사항  
Meiotic Crossover Patterning in Drosophila melanogaster. - [electronic resource] / Hartmann, Michaelyn Ann.
발행, 배포, 간사 사항  
발행, 배포, 간사 사항  
Ann Arbor : ProQuest Dissertations & Theses , 2019
    형태사항  
    1 online resource(142 p.)
    일반주기  
    Source: Dissertations Abstracts International, Volume: 81-03, Section: B.
    일반주기  
    Advisor: Sekelsky, Jeff
    학위논문주기  
    Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2019.
    이용제한주기  
    This item must not be sold to any third party vendors.
    요약 등 주기  
    요약Meiosis is an essential process to halve an organism's genome in preparation for transmission to the next generation. Recombination between homologous chromosomes is necessary for the proper segregation of chromosomes, and allows the generation of genetic diversity. Mistakes in meiosis can lead to aneuploidy, therefore, to minimize mistakes, recombination is a highly regulated process. Crossovers are patterned along a chromosome, and this patterning is dictated by three phenomena known as interference, assurance, and the centromere effect. Interference assures that a crossover does not occur too close to another crossover, assurance maintains that each chromosome gets at least one crossover, and the centromere effect suppresses crossovers that occur too close to the centromere. The work detailed in this dissertation first focuses on the proteins involved in crossover formation and then investigates the regulation of the suppression of centromere-proximal crossovers. I have gained insight into a potential endonuclease, Ankle1, as well as further elucidated the role of the mei-MCM complex in creating meiotic crossovers. In addition, I discovered that centromere-proximal crossover suppression is regulated both by the highly-repetitive heterochromatin adjacent to the centromere, as well as the protein-mediated centromere effect, which extends into the euchromatin and dissipates with distance from the centromere. Overall these findings have provided insight into the mechanisms of crossover formation and patterning and provided the foundation for future studies of meiotic crossover control.
    주제명부출표목-일반주제명  
    주제명부출표목-일반주제명  
    부출표목-단체명  
    The University of North Carolina at Chapel Hill Genetics and Molecular Biology
      기본자료저록  
      Dissertations Abstracts International. 81-03B.
      기본자료저록  
      Dissertation Abstract International
      전자적 위치 및 접속  
       원문정보보기

      MARC

       008200317s2019        ulk          s          00        eng
      ■001000015492384
      ■00520200217181648
      ■007cr
      ■020    ▼a9781085753234
      ■040    ▼d225006
      ■08204▼a574
      ■090    ▼a전자도서(박사논문)
      ■1001  ▼aHartmann,  Michaelyn  Ann.
      ■24510▼aMeiotic  Crossover  Patterning  in  Drosophila  melanogaster.▼h[electronic  resource]▼cHartmann,  Michaelyn  Ann.
      ■260    ▼a[S.l.]▼bThe  University  of  North  Carolina  at  Chapel  Hill.  ▼c2019
      ■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2019
      ■300    ▼a1  online  resource(142  p.)
      ■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  81-03,  Section:  B.
      ■500    ▼aAdvisor:  Sekelsky,  Jeff
      ■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2019.
      ■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
      ■520    ▼aMeiosis  is  an  essential  process  to  halve  an  organism's  genome  in  preparation  for  transmission  to  the  next  generation.  Recombination  between  homologous  chromosomes  is  necessary  for  the  proper  segregation  of  chromosomes,  and  allows  the  generation  of  genetic  diversity.  Mistakes  in  meiosis  can  lead  to  aneuploidy,  therefore,  to  minimize  mistakes,  recombination  is  a  highly  regulated  process.  Crossovers  are  patterned  along  a  chromosome,  and  this  patterning  is  dictated  by  three  phenomena  known  as  interference,  assurance,  and  the  centromere  effect.  Interference  assures  that  a  crossover  does  not  occur  too  close  to  another  crossover,  assurance  maintains  that  each  chromosome  gets  at  least  one  crossover,  and  the  centromere  effect  suppresses  crossovers  that  occur  too  close  to  the  centromere.  The  work  detailed  in  this  dissertation  first  focuses  on  the  proteins  involved  in  crossover  formation  and  then  investigates  the  regulation  of  the  suppression  of  centromere-proximal  crossovers.  I  have  gained  insight  into  a  potential  endonuclease,  Ankle1,  as  well  as  further  elucidated  the  role  of  the  mei-MCM  complex  in  creating  meiotic  crossovers.  In  addition,  I  discovered  that  centromere-proximal  crossover  suppression  is  regulated  both  by  the  highly-repetitive  heterochromatin  adjacent  to  the  centromere,  as  well  as  the  protein-mediated  centromere  effect,  which  extends  into  the  euchromatin  and  dissipates  with  distance  from  the  centromere.  Overall  these  findings  have  provided  insight  into  the  mechanisms  of  crossover  formation  and  patterning  and  provided  the  foundation  for  future  studies  of  meiotic  crossover  control.
      ■650  4▼aGenetics.
      ■650  4▼aCellular  biology.
      ■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bGenetics  and  Molecular  Biology.
      ■7730  ▼tDissertations  Abstracts  International▼g81-03B.
      ■773    ▼tDissertation  Abstract  International
      ■791    ▼aPh.D.
      ■792    ▼a2019
      ■793    ▼aEnglish
      ■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T15492384▼nKERIS

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