Environmental Factor, March 2007, National Institute of Environmental Health Sciences
Upcoming LMG Guest Lecturer
By Jan Drake
Matthew Meselson, Ph.D., will explore the question "What Maintains Sexual Reproduction?" in a Laboratory of Molecular Genetics (LMG) Trainee Seminar Series Lecture on March 9 at 10:00 a.m. in Rodbell Auditorium. Meselson is the Thomas Dudley Cabot Professor of the Natural Sciences at Harvard University and an adjunct scientist at the Marine Biological Laboratory in Woods Hole, Cape Cod, Mass.
Meselson's contributions to molecular biology include the development of equilibrium sedimentation of macromolecules in density gradients, the experimental proof of the semi-conservative nature of DNA replication, the demonstration of a break-reunion mechanism of genetic recombination in phage lambda, the discovery of the methylation-based mechanism that protects DNA against restriction enzymes, and the elucidation of DNA mismatch repair.
Meselson's current research is focused on the evolution and consequences of sex. The objective of his research is to understand why nearly all animals and plants reproduce sexually and why the loss of sexual reproduction usually leads to early extinction. He is studying an asexual rotifer species in an effort to understand why it appears to be an exception.
LMG Fellow Libertad Garcia Villada, Ph.D., is hosting Meselson's visit.