
Rachel O'Neill, Ph.D.
Board of Trustees Distinguished Professor, Molecular & Cell Biology and Institute for Systems Genomics University of Connecticut
- Storrs CT
Dr. O'Neill's research projects use molecular genetic approaches to study centromere function and evolution
Biography
Areas of Expertise
Education
La Trobe University
Ph.D.
Links
Media Appearances
Why the human genome was never completed
BBC online
2023-02-12
The repetitive DNA includes a lot of sequences that can move around in the genome, dubbed "mobile DNA".
"We're finding that a lot of these elements have contributed to evolutionary novelty," says Rachel O'Neill, a molecular geneticist at the University of Connecticut in Storrs. Many evolutionary leaps including the placenta, why we lost our tails and certain brain functions "can be attributed to these types of mobile DNA".
Behind the scenes: How a group of scientists made UConn athletics possible this season
Hearst Connecticut Media print
2021-02-20
The cost of athletics testing in this system is under $100,000, with each test costing under $10. That is far less expensive, with a quicker turnaround time, than services offered by off-campus labs. Costs to the lab for testing the student population at large, university professor and lab coordinator Dr. Rachel O’Neill said, is hundreds of thousands of dollars versus the millions it would have been with the use of off-site labs.
Exclusive photos show deep-sea canyon in U.S. waters teeming with life
National Geographic print
2018-12-10
“It's a whole new world down there,” says Rachel O'Neill, a geneticist from the University of Connecticut who was on the trip.
Aboard the ship, O'Neill sequenced the DNA of organisms that were collected below. This not only allowed the research crew to identify new species, but it also helped them learn how organisms are adapting to extreme environments.
UConn Teams With JAX to Study Single Cell Genomics
WNPR online
2015-08-27
"Jackson Lab’s arrival in Connecticut introduced many people to the concept of genomic medicine — the development of techniques that will allow medical treatments to be personalized to individual patients. And its a science that’s still rapidly evolving, said Dr. Rachel O'Neill of UConn’s Center for Genome Innovation..."
Articles
Transcriptomic Profiles of Spring and Summer Populations of the Southern Ocean salp, Salpa thompsoni, in the Western Antarctic Peninsula Region
Polar Biology2017
The Southern Ocean salp, Salpa thompsoni (Tunicata, Thaliacea), is a pivotal species in the pelagic ecosystem of the Western Antarctic Peninsula (WAP), one of the fastest warming regions of the world oceans. This study produced a complete reference transcriptome for S. thompsoni containing 216,931 sequences; 41,210 (18%) were associated with predicted, hypothetical, or known proteins; 13,058 (6%) ...
The Repetitive DNA Element BncDNA, Enriched in the B Chromosome of the Cichlid Fish Astatotilapia latifasciata, Transcribes a Potentially Noncoding RNA
Chromosoma2017
Supernumerary chromosomes have been studied in many species of eukaryotes, including the cichlid fish, Astatotilapia latifasciata. However, there are many unanswered questions about the maintenance, inheritance, and functional aspects of supernumerary chromosomes. The cichlid family has been highlighted as a model for evolutionary studies, including those that focus on mechanisms ...
Transcriptomic Imprints of Adaptation to Fresh Water: Parallel Evolution of Osmoregulatory Gene Expression in the Alewife
Molecular Ecology2017
Comparative approaches in physiological genomics offer an opportunity to understand the functional importance of genes involved in niche exploitation. We used populations of Alewife (Alosa pseudoharengus) to explore the transcriptional mechanisms that underlie adaptation to fresh water. Ancestrally anadromous Alewives have recently formed multiple, independently derived, landlocked ...
125 Incomplete Compensatory Up-Regulation of X-Linked Genes in Bovine Germline, Early Embryos, and Somatic Tissues
Reproduction, Fertility and Development2016
The maintenance of a proper gene dosage is essential in cellular networks. To resolve the dosage imbalance between eutherian females (XX) and male (XY), X chromosome inactivation (XCI) occurs in females, while X-chromosome dosage compensation up-regulates the active X to balance its expression with that of autosome pairs [Ohno’s hypothesis; Ohno 1967 Sex Chromosomes and Sex-linked ...
Rapid Evolutionary Rates and Unique Genomic Signatures Discovered in the First Reference Genome for the Southern Ocean Salp, Salpa thompsoni (Urochordata, Thaliacea)
Genome Biology and Evolution2016
A preliminary genome sequence has been assembled for the Southern Ocean salp, Salpa thompsoni (Urochordata, Thaliacea). Despite the ecological importance of this species in Antarctic pelagic food webs and its potential role as an indicator of changing Southern Ocean ecosystems in response to climate change, no genomic resources are available for S. thompsoni or any closely related urochordate ...