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The Structure of Fitness Landscapes Across Genotypes and Environments
The Structure of Fitness Landscapes Across Genotypes and Environments
The Structure of Fitness Landscapes Across Genotypes and Environments

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211152833
ISBN  
9798346533382
DDC  
574
저자명  
Gopalakrishnan, Shreyas.
서명/저자  
The Structure of Fitness Landscapes Across Genotypes and Environments
발행사항  
[Sl] : Harvard University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
251 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
주기사항  
Advisor: Desai, Michael M.
학위논문주기  
Thesis (Ph.D.)--Harvard University, 2024.
초록/해제  
요약Over the last 20 years, advances in experimental genetics have allowed us to map fitness landscapes at a scale and resolution that the likes of Fisher, Haldane, and Wright could not have even dreamed of a hundred years ago. These cutting-edge experimental methods have empowered us to try and understand the features of the evolutionary process in the wild by using experiments in the lab. In this dissertation, I will describe three such experimental projects that I undertook to map the fitness landscape across many different genotypes and environments in budding yeast.In chapter 2, I describe the process of molecular and phenotypic adaptation in the longest-running laboratory evolution experiment in budding yeast. In chapter 3, I report work in which we constructed, genotyped, and phenotyped ≈ 100,000 F1 offspring from a budding yeast cross and mapped the highly polygenic and epistatic fitness landscape in different environments at a resolution ≈ 10 times better than the previous state of the art. In chapter 4, I detail further experiments using the 100,000 F1 offspring where we measured their fitness in an extremely large panel of structured environments to understand the pleiotropic structure across environments and used it to map the functional organization of the cell. Finally, in chapter 5, I briefly summarize our results and mention promising future avenues for this body of work.
일반주제명  
Biology
일반주제명  
Cellular biology
일반주제명  
Molecular biology
일반주제명  
Genetics
키워드  
Experimental evolution
키워드  
Quantitative genetics
키워드  
Phenotypic adaptation
키워드  
Genotypes
기타저자  
Harvard University Biology Molecular and Cellular
기본자료저록  
Dissertations Abstracts International. 86-05B.
전자적 위치 및 접속  
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■1001  ▼aGopalakrishnan,  Shreyas.▼0(orcid)0000-0002-7243-0005
■24510▼aThe  Structure  of  Fitness  Landscapes  Across  Genotypes  and  Environments
■260    ▼a[Sl]▼bHarvard  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a251  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-05,  Section:  B.
■500    ▼aAdvisor:  Desai,  Michael  M.
■5021  ▼aThesis  (Ph.D.)--Harvard  University,  2024.
■520    ▼aOver  the  last  20  years,  advances  in  experimental  genetics  have  allowed  us  to  map  fitness  landscapes  at  a  scale  and  resolution  that  the  likes  of  Fisher,  Haldane,  and  Wright  could  not  have  even  dreamed  of  a  hundred  years  ago.  These  cutting-edge  experimental  methods  have  empowered  us  to  try  and  understand  the  features  of  the  evolutionary  process  in  the  wild  by  using  experiments  in  the  lab.  In  this  dissertation,  I  will  describe  three  such  experimental  projects  that  I  undertook  to  map  the  fitness  landscape  across  many  different  genotypes  and  environments  in  budding  yeast.In  chapter  2,  I  describe  the  process  of  molecular  and  phenotypic  adaptation  in  the  longest-running  laboratory  evolution  experiment  in  budding  yeast.  In  chapter  3,  I  report  work  in  which  we  constructed,  genotyped,  and  phenotyped  ≈  100,000  F1  offspring  from  a  budding  yeast  cross  and  mapped  the  highly  polygenic  and  epistatic  fitness  landscape  in  different  environments  at  a  resolution  ≈  10  times  better  than  the  previous  state  of  the  art.  In  chapter  4,  I  detail  further  experiments  using  the  100,000  F1  offspring  where  we  measured  their  fitness  in  an  extremely  large  panel  of  structured  environments  to  understand  the  pleiotropic  structure  across  environments  and  used  it  to  map  the  functional  organization  of  the  cell.  Finally,  in  chapter  5,  I  briefly  summarize  our  results  and  mention  promising  future  avenues  for  this  body  of  work.
■590    ▼aSchool  code:  0084.
■650  4▼aBiology
■650  4▼aCellular  biology
■650  4▼aMolecular  biology
■650  4▼aGenetics
■653    ▼aExperimental  evolution
■653    ▼aQuantitative  genetics
■653    ▼aPhenotypic  adaptation
■653    ▼aGenotypes
■690    ▼a0306
■690    ▼a0379
■690    ▼a0369
■690    ▼a0307
■71020▼aHarvard  University▼bBiology,  Molecular  and  Cellular.
■7730  ▼tDissertations  Abstracts  International▼g86-05B.
■790    ▼a0084
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164110▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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