For a long period of time, geneticists believed that one gene codes for one polypeptide. This hypothesis has been re-evaluated for two reasons. Firstly, some genes do not encode polypeptides, but functional RNA molecules. Secondly, due to the phenomenon of alternative splicing, some genes can encode several similar but not identical polypeptides. This phenomenon is present only in eukaryotes and it is based the fact that different parts of some genes can be used during gene expression.
<span>It is "still deeply rooted in the classical
tradition".</span>
The <span>Mausoleum
of Galla Placidia </span>is a
Roman structure in Ravenna, Italy. In the year 1996 it was recorded with seven
different structures in Ravenna On the World Heritage
List. The UNESCO specialists depict it as the oldest and best
protected of mosaic landmark, and in the meantime a standout among the most
creatively perfect.
Forced Germanic and Persian tribes into Roman lands, undercut Rome's tax base, and demanded expensive tribute. Rome was then always in constant warfare, began losing arts, and science. Basically sent the Roman empire backwards.
