Kategori: B -OTHER LANGUAGES
When We Became Human? – Is This The Magic Human Gene?
In the following fascinating story it would seem that a mutation to gene MYH16 about 2.4 million years ago might have been responsible for releasing a hitherto vice-like grip on human skull-size. Is this the crucial mutation that led to homo sapiens? Probably not. Once the human cranium had the potential to grow larger, there would have to…
Evolution vom Fisch zum Amphibium
Der Übergang von den Fischen zu den Amphibien war eigentlich kein Übergang vom Wasser zum Land sondern ein Übergang von Flossen zu Füßen, der im Wasser stattfand. Die allerersten Amphibien hatten entwickelte Beine und Füße, um am Boden des Wassers herumzustöbern, genauso wie es einige moderne Fische tun. Auch Lungen waren kein Problem, denn die ältesten Fische hatten schon Lungen.
Human Clades: A Look at a Complex Phylogeny
Most methods of phylogenetic analysis deal with simple trees. In these phylogenies, every taxonomic unit has a single direct ancestor (or “parent”). But we know that phylogeny is often more complex than this. Our own species is an excellent example—while we are all primarily descended from one population in Africa, different peoples around the globe…
Evrim Teorisi Online 