dominant/recessive genes

Thu Nov 16 11:50:19 EST 1995

In simple discussions of genetics one hears of dominant and recessive
genes.  Dominant genes are expressed, while recessive ones are not.

What is it exactly that makes one of a complementary pair of genes
dominant and the other recessive?  Also, is the domination complete
(i.e. dominant gene expressed 100%, recessive gene expressed 0%) or
is it more of a 90%/10% or 80%/20% situation?

I know that the laws of thermodynamics must be obeyed, so if you
can explain this phenomenon using thermodynamic arguments I would
appreciate it.


Greg King

Gregory King                             Internet: gking at arserrc.gov
Eastern Rgnl. Rsrch. Cntr., ARS, USDA       Voice: (1) 215 233 6675
600 East Mermaid Lane                         Fax: (1) 215 233 6559
Philadelphia, PA  19118-2551

Disclaimer: Any opinions expressed in this message are mine.

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