Concept 38 Development balances cell growth and death.
A young Leland Hartwell with his dog Sparky.
Leland Hartwell, President and Director of the Fred Hutchinson Cancer Research Center.
Robert Horvitz, Whitehead Professor of Biology, Massachusetts Institute of Technology.
Michael Hengartner, age three, with toy goat.
Michael Hengartner, age 18, in his high school chemistry lab.
Michael Hengartner with his kids, Alex and Sophie, 1999.
Michael Hengartner, Associate Professor, Watson School of Biological Sciences, Cold Spring Harbor Laboratory.
Scott Lowe working in his laboratory.
Scott Lowe, Professor, Watson School of Biological Sciences, Cold Spring Harbor Laboratory.
One of the early cell cycle mutants isolated in Lee Hartwell's lab was almost thrown out. The mutants grew slowly, and were smaller than usual, which didn't seem to be that "unique" a phenotype.
Why didn't organisms evolve so that they produce only the absolute number of cells that they needed?
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A young Leland Hartwell with his dog Sparky.
DNA is packaged in a chromosome.
Higher cells incorporate an ancient chromosome.
Some DNA does not encode protein.
Some DNA can jump.
Genes can be turned on and off.
Genes can be moved between species.
DNA responds to signals from outside the cell.
Different genes are active in different kinds of cells.
Master genes control basic body plans.
Development balances cell growth and death.
A genome is an entire set of genes.
Living things share common genes.
DNA is only the beginning for understanding the human genome.