Rank was normally Pinned on. Sewn on when a seamstress was available; as in most wars. Overcoat's did not normally have unit patches sewn on, again, usually when a seamstress was available & and the unit SOP (Standard Operating Procedures); most often in rear areas.
Subdued rank insignia in the US Armed Forces wasn't introduced until the Vietnam war.
no
During cell division chromatin threads from the chromosome.
Due to sweating
Yes during the holocaust they had to wear yellow stars on their clothing usually on their chest.
Nuclear division plays a role in cell division.
The GU patches are in honor of football great Gene Upshaw who recently passed away.
It's the natural salts present in the leather that show up as discoloured patches
the parts of the cell which are copied during cell division are chromosomes.
The British army wore patches on the sleeve of their uniform that were called "formation patches". These patches would designate divisions or brigades. Swords was quite common to see on these patches. Some patches used spearheads, which resembled an arrow head. There was one patch that was a RED square with a Bow & Arrow, with the box bent ready to shoot the arrow. I have a photo of this patch but forgot what it represented; most likely a Anti-Aircraft unit based in UK. The British army also wore trade or qualification or speciality patches that designated a soldier was a bomb displosal member, for example. Here are two examples of formation patches that used an arrow. These may or may not have been worn in WW2. 54th Division - Coronet On Crossed Arrows on blue. 6th Anti-Aircraft Division - Red Arrow; White Target On Black These and many more patches can be seen on this site. http://www.kellybadge.co.uk/Stock/armbadge.htm Anti aircraft command had formation patch of a black arm drawing a black bow and arrow on a red square patch.
Mitosis
During cell division the structures that the DNA of eukaryotes bunch into are the chromosomes.chromosomes