parasites

?

- what is an example of gene transfer

when a trait is transferred to other organisms e.g photosynthesis firstly arrose by algae and then was passed around many times 

endosymbiosis:

describes how eukaryotic cells developed organelles which are descended from prokaryotes

evidence for endosymbiosis:

mitochondria and chloroplasts contain their own; DNA, ribosomes and are sensitive to antibiotics 

eukaryotic nucleus caontains bacterial genes

protozoa:

single celled

motile

eukaryotes that lack chlorophyll II

there are 4 groups based on motility 

1 = Amoebas 

they move by ameboid movement = leaping forward 

usually no structured cell wall but can have a shell comprised of calcium carbonate 

often asymptomatic…

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