Molecular, Cellular, and Developmental Biology

Kline Biology Tower, 432.3538
M.S., Ph.D.

Chair
Michael Snyder

Director of Graduate Studies
Ronald Breaker (708 KBT, 432.9389, ronald.breaker@yale.edu)

Professors
Sidney Altman, Kim Bottomly (Immunology), John Carlson, Stephen Dellaporta, Xing-Wang Deng, Mary Helen Goldsmith, Timothy Goldsmith, Douglas Kankel, Michael Kashgarian (Pathology), Haig Keshishian, Perry Miller (Anesthesiology), Mark Mooseker, Jon Morrow (Pathology), Frederick Naftolin (Obstetrics & Gynecology), Timothy Nelson, L. Nicholas Ornston, Thomas Pollard, Shirleen Roeder, Joel Rosenbaum, Frank Ruddle, Alanna Schepartz (Chemistry), Steven Segal (Physiology), Michael Snyder, Robert Wyman

Associate Professors
Ronald Breaker, Craig Crews, Paul Forscher, Vivian Irish, Junhyong Kim (Ecology & Evolutionary Biology), Archibald Perkins (Pathology), William Segraves

Assistant Professors
Savithramma Dinesh-Kumar, Christine Jacobs, Frank Slack, David Wells, Weimin Zhong

Fields of Study
Research in genetics and molecular biology encompasses studies of catalytic RNAs, cell cycle regulation, chromosome segregation, genetic recombination, mutation, transposons, and oncogenes. Research topics in cellular and developmental biology include structure of the cell cytoskeleton, molecular motors, cell surface receptors, protein transport, hormone action, mammalian transcription factors, and the regulation of cell proliferation and differentiation. Research in neurobiology focuses on sensory signal transduction, animal color vision, growth cone motility, neural differentiation, synaptogenesis, and the formation of topographic maps. A Special Program in Plant Sciences provides research and training in the molecular genetics of flowering, the developmental biology of leaves, the physiology of hormone action, sex determination, and the cellular and molecular biology of photomorphogenesis. Because of the breadth of the track, students are provided with unique opportunities for interdisciplinary studies.

Special Admissions Requirements
Applicants should have obtained training in the structure, development, and physiology of organisms; the structure, biochemistry, and physiology of cells; genetics; elementary calculus; elementary physics; inorganic and organic chemistry; statistics or advanced mathematics. Lack of some prerequisites can be made up in the first year of graduate study. Students having different science training, such as degrees in chemistry, physics, or engineering, are encouraged to apply. In addition to the GRE General Test, a Subject Test is required, preferably in Biology, or in Biochemistry, Cell and Molecular Biology.

Special Requirements for the Ph.D. Degree
None of the fields of study has a required curriculum of courses. With the help of a faculty committee, each student plans a specific program that includes appropriate courses, seminars, laboratory rotations, and independent reading fitted to individual needs and career goals. There is no foreign language requirement. Late in the third term of study the student meets with a faculty committee to decide on a preliminary topic for dissertation work and to define the research areas in which he or she is expected to demonstrate competence. By the end of the second year each student prepares a dissertation prospectus outlining the research proposed for the Ph.D. When this is accepted by a dissertation committee of faculty members, when the committee is satisfied that the student has demonstrated competence in the areas necessary to conduct the proposed work, and when the other requirements indicated above are fulfilled, the student is admitted to candidacy for the Ph.D. (but no later than the end of the second year of study). The remaining requirements include completion of the dissertation research, presentation and defense of the dissertation, and submission of acceptable copies of the dissertation to the Graduate School and to the Kline Science Library. All students are required to teach in two one-term courses during their Ph.D. study excluding the first year.

Honors Requirement
Students must meet the Graduate School's Honors requirement by the end of the fourth term of full-time study.

Master's Degree
M.S. (en route to the Ph.D.) The minimum requirements for award of the Master of Science Degree are: (1) two academic years registered and in residence full time in the graduate program; (2) satisfactory completion of the first two years of study and research leading to the Ph.D.; this requirement may be met either (a) by completing a minimum of five courses with an average grade of High Pass, or (b) by successfully completing an approved combination of courses and research and passing the prospectus examination; (3) recommendation by the department for award of the degree, subject to final review and approval by the appropriate degree committee. No courses that were taken prior to matriculation in the graduate program, or in Yale College, or in summer programs may be applied toward these requirements.

Program materials are available upon request to the Director of Graduate Studies, Department of Molecular, Cellular, and Developmental Biology, Yale University, PO Box 208103, New Haven CT 06520-8103.

Courses
MCDB 500au, Biochemistry. L. Nicholas Ornston, Robert Macnab. Mon/Wed/Fri 9.30-10.20
An introduction to the biochemistry of animals, plants, and microorganisms, emphasizing the relations of chemical principles and structure to the evolution and regulation of living systems.

MCDB 505au, Molecular Genetics of Prokaryotes. Nigel Grindley, Charles Radding, Catherine Joyce. Mon/Wed 11.30-12.45
Molecular aspects of the storage, replication, evolution, and expression of genetic material in prokaryotes. Also GENE 705a, MB&B 705au.

MCDB 530au, Biology of the Immune System. Kim Bottomly and staff. Mon/Wed/Fri 9.30-10.20
The development of the immune system. Cellular and molecular mechanisms of immune recognition. Effector responses against pathogens; autoimmunity. Also IBIO 530a.

MCDB 539b, Advanced Immunology Seminar: Functions of the Major Histocompatibility Complex. Peter Cresswell, Ira Mellman, Akiko Iwasaki.
This seminar course consists of a brief introductory session followed by detailed critical reviews of key papers in the field. We consider the genetics of the MHC, structures of MHC class I and class II molecules and homologs, and the mechanisms governing their assembly with peptides. We also cover the cell biology of antigen processing in various types of antigen-presenting cells, including B-cells and dendritic cells. Enrollment limited to fifteen. Also IBIO 539b.

MCDB 550au, Physiological Systems. Steven Segal and staff. Mon/Wed/Fri 9.30-10.20
Regulation and control in the human body, emphasizing principles of feedback and the maintenance of homeostasis. Biophysical properties of cells, tissues, and organs are presented in light of the structural basis of physiological control. Also C&MP 550a, ENAS 550au.

MCDB 555bu, Molecular Basis of Development. Xing-Wang Deng, Douglas Kankel, and staff. Mon/Wed 9-10.15
Study of current understanding of the molecular mechanism of cell signaling and development in multicellular organisms. Topics include the basics of cell signaling and experimental model organisms, cell proliferation and death, cell specification and determination, cell migration, hormonal regulation, and environmental regulation.

MCDB 570bu, Biotechnology. Michael Snyder, Ronald Breaker, Kenneth Nelson, Joseph Wolenski. Mon/Wed 11.30-12.45
The cellular, molecular, and chemical techniques in biology that advance biotechnology. Topics include tools and strategies used to increase understanding of biological processes and adapting biological and chemical compounds for use as medical treatments, industrial agents, or for the further study of biological systems. Design and implementation of drug development and approval.

MCDB 600La, Advanced Biological Laboratory. Mike Snyder, Ronald Breaker, Xing-Wang Deng, Kenneth Nelson, Joseph Wolenski, David Austin, Frank Ruddle. Mon/Wed 1-5
A laboratory course to familarize graduate students with state-of-the-art technologies in molecular biology, genomics. Students carry out research projects and incorporate their own projects into the lab. The class meets for two afternoons each week and consists of 2-3 week modules covering the following topics: microarray analysis, plant genetic engineering, mouse genetic engineering, imaging/microscopy, ribozyme enzymol/engineering, phage display/ chemical biology.

MCDB 615bu, Genetics and Molecular Biology of Plant Development. Timothy Nelson and staff. Monday 2.30-4.20
Genetic and molecular analyses of plant embryogenesis, organogenesis, and other topics in plant development.

MCDB 625au, Basic Concepts of Genetic Analysis. Tian Xu, Michael Koelle, Richard Lifton, Shirleen Roeder, Michael Stern. Tues/Thurs 1.05-2.20
The universal principles of genetic analysis in eukaryotes are discussed in lectures. Students also read a small selection of primary papers illustrating the very best of genetic analysis and dissect them in detail in the discussion sections. While other Yale graduate molecular genetics courses emphasize molecular biology, this course focuses on the concepts and logic underlying modern genetic analysis. Also GENE 625a, MB&B 625au.

MCDB 642a, Roles of Microorganisms in the Living World. L. Nicholas Ornston and staff. Tues/Thurs 11.30-12.45
A topical course exploring the biology of microorganisms. Emphasis on mechanisms underlying microbial adaptations and how they influence biological systems. Also EMD 642a, GENE 642a, MBIO 642a.

MCDB 660au, Structure, Function, and Development of Vascular Plants. Graeme Berlyn. Tues/Thurs 2.30-3.45
Morphogenesis and adaptation of vascular plants considered from seed formation and germination to maturity. Physiological and developmental processes associated with structural changes in response to environment discussed from both a phylogenetic and an adaptive point of view.

MCDB 670b, Advanced Seminar in Biochemistry and Genetics. Sidney Altman, Ronald Breaker, Stephen Dellaporta. Wednesday 1.30-3.45
Topics to be decided.

MCDB 677a, Mechanisms of Development. Lynn Cooley and staff. Monday 9.45-11, Friday 2.15-3.30
An advanced course on the mechanisms of animal development focusing on the genetic specification of cell organization and identity during embryogenesis and somatic differentiation. The use of evolutionarily conserved signaling pathways to carry out developmental decisions in a range of animals is highlighted. Course work includes student presentations and critical analysis of primary literature. Also GENE 777a.

[MCDB 680b, Genetic Dissection of Cell Signaling and Development.]

MCDB 692a, Advanced Seminar in Cell Biology: Mechanisms of Signal Transduction. Craig Crews. Monday 7-10
Discussion/seminar course with special emphasis on the molecular signal transduction mechanisms of mitogenesis and cell division.

MCDB 720au, Neurobiology. Haig Keshishian, Paul Forscher. Mon/Wed/Fri 11.30-12.20
Examination of the excitability of the nerve cell membrane as a starting point for the study of molecular, cellular, and intercellular mechanisms underlying the generation and control of behavior. Also NBIO 720a, NSCI 720a.

MCDB 721Lau, Laboratory for Neurobiology. Haig Keshishian, Robert Wyman, Stephen Senft. Tuesday or Wednesday 1.30-6
Optional laboratory. Introduction to the neurosciences. Projects include the study of neuronal excitability, sensory transduction, CNS function, synaptic physiology, and neuroanatomy.

MCDB 735bu, Brain Development and Plasticity. Weimin Zhong, David Wells. Mon/Wed 2.30-3.45
Interpretation of primary literature including recent reviews and basic research papers in the areas of neuron generation and regeneration, neuron phenotype determination, axon guidance systems, and the role of activity in organizing and increasing the efficiency of synaptic connections.

MCDB 752au, Genomics and Bioinformatics. Dieter Söll, Mark Gerstein, Michael Snyder. Mon/Wed 1-2.15
Genomics describes the determination of the nucleotide sequence and many further analyses to discover functional and structural information on all the genes of an organism. Topics include the methods and results of functional and structural gene analysis on a genome-wide scale as well as a discussion of the implications of this research. Bioinformatics describes the computational analysis of genomes and macromolecular structures on a large scale. Topics include sequence alignment, biological database design, geometric analysis of protein structure, and macromolecular simulation. Also MB&B 752au.

[MCDB 861bu, Global Problems of Population Growth.]

MCDB 900a and 901b, First-Year Introduction to Research and Rotations. Ronald Breaker. Thursday 5

MCDB 950a and 951b, Second-Year Research.
By arrangement with faculty.

The following courses are required for students in the joint B.S./M.S. program with Yale College:

MCDB 585b, Research in MCDB for B.S./M.S. Candidates.
A two-credit course taken in the third-to-last term (typically the second term of the junior year). At the end of this course, students complete a detailed prospectus describing their thesis project, and the work completed thus far. An oral and written presentation of this prospectus is evaluated by the adviser and two faculty members; the evaluation will determine whether the student may continue in the program.

MCDB 595, Intensive Research in MCDB for B.S./M.S. Candidates.
A four-credit course (two credits each term) that is similar to MCDB 495 and spans the last two terms (i.e., typically the senior year). During this course, students give an oral presentation describing their work. At the end, a comprehensive thesis is turned in and evaluated by the adviser and two other faculty members. Students must earn a B grade or higher in this course in order to receive the M.S. degree.

Next: Music