Príklady phylum

• Origin of the metazoan phyla: molecular clocks confirm palaeontological estimates.

• Whereas they are consistent in the classification of lower level taxa, the major divisions of the phylum differ according to the characters used.

• However, while there are many universal themes underlying fertilisation biology, there are also interesting differences between phyla and even between species.

• The editors studiously avoid any further mention of ' stocks ', ' phyla ', or ' superfamilies ' of any kind.

• Operant processes are known to occur in several phyla, suggesting that their origin reaches deeply into the history of life on earth.

• What it conspicuously doesn't do, however, is say anything too explicit about the origin of phyla.

• One area of particular interest at the moment in metazoan phylogeny is the status of a number of so-called minor phyla.

• The free-living planaria tissue section was used as a negative control, because this organism belonged to the same phylum.

• Eggs may in some cases be partially or totally activated by spermatozoa from a different species or, indeed, phylum.

• Even at the level of family or phylum, progress is painfully slow.

• Over the years, we noticed that he was working his way through smaller species and then down the phyla of the animal and insect kingdoms.

• The model systems reported on for dormancy research from other kingdoms included the tardigrades (or waterbears), a fascinating phylum of approximately 750 species.

• Since the sampling method used here mitigates the effects on the sample of the postulation of large phyla, this criticism hardly affects the constitution of our sample.

• Hence, phylum-level conclusions on function should be drawn cautiously.

• A century and a half on, the mystery of mysteries may have inflated to the origin of phyla, but the approach remains very much the same.