Concept 38 Development balances cell growth and death.
Mike Hengartner is Dean of the Faculty of Science, University of Zurich, and holds a chair in molecular biology. He works on programmed cell death in C. elegans. Cell death movie, courtesy of Dr. D. Hoeppner, NIH and Dr. R. Schnabel, Institut fuer Genetick, TU Braunschweig. Noncommercial, educational use only. Scott Lowe is an adjunct professor at the Watson School of Biological Sciences, Cold Spring Harbor Laboratory. He works at the Memorial Sloan-Kettering Cancer Center on natural defense systems against cancer.
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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.