As you can see, many of the symptoms associated with glandular fever could also be a sign of another illness. That's why it's so important to see a doctor as soon as you can. Our GPs will provide an accurate diagnosis that'll ensure you get the most effective treatment. Make an appointment Available. Explore related conditions: Viral Infection; Sore Throat
Phylogenesis (from Greek Ïá¿¦Î»Î¿Î½ phylon tribe + Î³Î­Î½ÎµÏÎ¹Ï genesis origin) is the biological process by which a taxon (of any rank) appears. The science that studies these processes is called phylogenetics.
Peter J. Bowler has defined orthogenesis as: Literally, the term means evolution in a straight line, generally assumed to be evolution that is held to a regular course by forces internal to the organism. Orthogenesis assumes that variation is not random but is directed towards fixed goals.