In what ways are cells and
nebulas similar? Think about this a bit and jot down a few ideas. Then
check the hint link for a thought provoking
quiz.. ...If large image
downloads are not a problem, go to hints
here.. ...For an easier
multi-page download, go to hints here. If allelic exclusion did
not occur, how many possible combinations of whole
four-chain molecules of immunoglobulin are possible for a
single B cell? Assume each gene complex is rearranged independently,
then transcribed and translated. Assume also there is no
repression of expression by any regulatory factors. Assume
also that the only isotype detected is IgG1. [Have your
answer ready for class discussion this next week.] ...Think first
before looking at the hint. .
Brain teaser 1:.
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Brain teaser 2:
Updated 8/27/04 by thatcher@sonoma.edu