Concept 35 DNA responds to signals from outside the cell.
James Darnell, Professor, Rockefeller University.
Each of your cells has about 1,000 interferon receptors embedded in its membrane.
How does a cell determine how many receptors to make?
Loading image. Please wait
James Darnell, Professor, Rockefeller University.
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.