a marine Dinoflagellate

Franz Neidl · Post by **Franz Neidl** » Fri Sep 23, 2011 9:33 am

This is Polykrikos (kofoidii?), a marine dinoflagellate. It was 82 µm long.
You see the two kinds of flagellae and in the second picture even the chromosomes of the nuclei.
The form of the nucleus of the dinoflagellates is rather an exception in biology (almost always in mitosis; look in Internet under "those amazing dinoflagellate chromosomes").

Franz

René · Post by **René** » Fri Sep 23, 2011 3:03 pm

Hi Franz, great images of a young cell! You can even see the nematocysts in the lower images, left of the chromosomes. That the DNA in dinos is permanently condensed is however not a permanent state of mitosis.

Best wishes, René