Parasite Eggs

PURPOSE To identify the parasites that are present in feces of cows, dogs and horses. HYPOTHESIS If the parasites are in the feces samples, then we can see them. MATERIALS Three samples of feces: one of a cow, one of a dog and another of a horse. A Foldscope Two or three plastic slides A…

Finding fruit flies in fermenting fruits

I had the great privilege to attend the Pan-American EvoDevo conference last week and learn from world experts on some of the most interesting life forms on the planet!  This list of interesting life forms definitely includes the common fruit fly Drosophila melanogaster, a common guest in kitchens and compost piles around the world. While…

Watching sea urchin eggs trying to divide 

It’s incredible to think about that most multicellular life forms – be it a human or a whale; start from a single cell. Just one single cell. We are more than 30 trillion cells; but all of them can be traced bag to a single cell. How remarkable is that!! Trying to wrap my head…

Egg shell membrane – Easter Eggs 

I hear that this weekend is Easter egg hunt – and everyone goes around looking for beautifully decorated eggs. I also learned that you can trade your Easter egg for a candy. All that is good; but that got started me on the path of thinking – an egg is beautiful by itself. Why paint…

Copepod egg sac – upclose..

In the same spirit of talking about copepods; the first striking thing you notice about them is that some of them carry two big sacs of developing embryos with them. The sacs are almost as big as the copepod themselves. I wonder how much drag does carrying an egg sac cause on the copepod. It’s…