Profile photo of Eric Haag
Contact Info
Office Phone: 301.405.8534
Lab Phone: 301.405.8625
Fax: 301.314.9358
Office Address: 0256 Biology-Psychology Bldg
Eric Haag
Director, Biological Sciences Graduate Program


  • BSCI170: Principles of Molecular & Cellular Biology
  • BIOL 615: Developmental Genetics

Graduate Program Affiliations

  • BISI - Molecular & Cellular Biology (MOCB)
  • BISI - Behavior, Ecology, Evolution, & Systematics (BEES)
  • ​BISI - Computational Biology, Bioinformatics, and Genomics (CBBG)

Research Interests

Sexual reproduction is an ancient process found across the Eukaryotes. In animals and plants, sex is typically fully outcrossing, whether through hermaphrodites or separate male and female sexes. However, some species abandon outcrossing some or all of the time via uniparental reproduction. Dr. Haag's lab has focused on one of the most experimentally tractable of these, the self-fertile Caenorhabditis nematodes. At least three separate times in this genus, the historically female sex gained self-fertility by the evolution of limited spermatogenesis. Starting with the wealth of knowledge about "the worm," C. elegans, Dr. Haag's research has touched on a number of related topics. A major focus has been on the evolution of germline sex determination (the proximate cause of self-fertilty) and the genetics of convergent evolution. More recently, his group has documented a number of surprising consequences of self-fertility, such as massive loss of genes and hypersensitivity to the harmful effects of cross-species mating. Thus, a simple change in transmission genetics can rapidly, reproducibly, and radically alter other biological attributes of an organism. 


Ph.D., Indiana University, 1997. (molecular, cell, & developmental biology; evolution)
Postdoctoral Fellow, Univ. of Wisconsin, Madision, 1997-2001 (evolution of nematode sex determination genes)

All Publications

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Latest Publications via PubMed

Li CY,Boldt H,Parent E,Ficklin J,James A,Anlage TJ,Boyer LM,Pierce BR,Siegfried KR,Harris MP,Haag ES
J Exp Zool B Mol Dev Evol. 2024 May;342(3):164-177. doi: 10.1002/jez.b.23216. Epub 2023 Aug 8
Rogers CD,Amemiya C,Arur S,Babonis L,Barresi M,Bartlett M,Behringer R,Benham-Pyle B,Bergmann D,Blackman B,Brown CT,Browne B,Camacho J,Chabu CY,Chow I,Cleaver O,Cool J,Dennis MY,Dickinson AJ,Di Talia S,Frank M,Gillmor S,Haag ES,Hariharan I,Harland R,Husbands A,Jerome-Majewska L,Koenig K,Labonne C,Layden M,Lowe C,Mani M,Martik M,McKown K,Moens C,Mosimann C,Onyenedum J,Reed R,Rivera A,Rokhsar D,Royer L,Rutaganira F,Shahan R,Sinha N,Swalla B,Van Norman JM,Wagner DE,Wikramanayake A,Zebell S,Brady SM
Development. 2024 Feb 1;151(3):. doi: 10.1242/dev.202342. Epub 2024 Feb 12
Haag ES
Arch Sex Behav. 2021 Aug;50(6):2289-2291. doi: 10.1007/s10508-019-01575-z. Epub 2019 Nov 8
Van Goor J,Shakes DC,Haag ES
Cells. 2021 Jul 15;10(7):. doi: 10.3390/cells10071793. Epub 2021 Jul 15
Yin D,Haag ES
Proc Natl Acad Sci U S A. 2019 Jun 25;116(26):12919-12924. doi: 10.1073/pnas.1903925116. Epub 2019 Jun 12
Wray GA,Haag ES
Nat Ecol Evol. 2019 Apr;3(4):518-519. doi: 10.1038/s41559-019-0844-z. Epub
Haag ES,Dinman JD
Dev Cell. 2019 Mar 25;48(6):744-746. doi: 10.1016/j.devcel.2019.03.005. Epub
Hu S,Skelly LE,Kaymak E,Freeberg L,Lo TW,Kuersten S,Ryder SP,Haag ES
Dev Biol. 2019 Feb 15;446(2):193-205. doi: 10.1016/j.ydbio.2018.11.024. Epub 2018 Dec 30
Haag ES,Fitch DHA,Delattre M
Genetics. 2018 Oct;210(2):397-433. doi: 10.1534/genetics.118.300243. Epub
Haag ES,Lo TW
Dev Cell. 2018 Apr 23;45(2):147-148. doi: 10.1016/j.devcel.2018.04.006. Epub
Yin D,Schwarz EM,Thomas CG,Felde RL,Korf IF,Cutter AD,Schartner CM,Ralston EJ,Meyer BJ,Haag ES
Science. 2018 Jan 5;359(6371):55-61. doi: 10.1126/science.aao0827. Epub