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<H1>Genetics, an Introduction</H1>
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<P>Working out genetics of genes on punnett squares. Examples of how genes work. </P>
<H2>Meanings of "Genetic"</H2>
See: <A HREF="evo/gen/genetic.html">Genetics introduced</A><BR>
<OL START="1" TYPE="1">
<LI>genetics = some portion of the trait is inherited in some way.
<LI>genetics = the trait is controlled by some combination of named
Mendelian genes, which may be may be identified as being located
on a particular chromosome, and near some other genes.
<LI>Genetics = The length of DNA of the gene responsible for a
trait has been identified and its sequence determined.
<LI>Genetics = the gene responsible for a trait has been
sequenced, and we know the molecular biology of how the gene
product works and how mutations in it produce different results.
</OL>
<H2>Genetics, Heredity and Heritability</H2>
<P> Heritability is the extent to which the phenotype is
determined by the genetic makeup of the individual. Some traits
are purely driven by genetics, and these traits have a high heritability.
Other traits are strongly influenced by the individual's
environment, and their heritability is low.</P>
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Copyright © 1999 Athro, Limited. All Rights Reserved.<BR>
Written by Paul J. Morris <A HREF="mailto:mole@morris.net">mole@morris.net</A><BR>
Maintained by <A HREF="general/comment.html" TARGET="_blank" >Athro Limited</A><BR>
Date Created: 22 Dec 1999<BR>
Last Updated: 22 Dec 1999<BR>
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