(work started with Dr. Paul G. Falkowski at Brookhaven National Laboratory, New York)
This is a micrograph of Dunaliella tertiolecta, a common green algae that inhabits tide pools in many parts of the world. This particlar alga is the decendant of a single cell isolated from a Norwegian fjord in 1928. Assuming it has divided just once per week (and it is capable of dividing up to 3 times a day under optimal conditions!), it has survived for over 3000 generations...the equivalent of the time since the end of the last ice age, in human terms. Is this an immortal organism?
The graphs above show that when placed in darkness for about one week (starting on day 1), there is:
The photographs of electrophoretic gels above demonstrate:
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