Question

Which discovery supported the endosymbiotic theory?

Answer 1

Answer:

Endosymbiotic theory, that attempts to explain the origins of eukaryotic cell organelles such as mitochondria in animals and fungi and chloroplasts in plants was greatly advanced by the seminal work of biologist Lynn Margulis in the 1960s.

Answer 2

The Answer is:

According to the endosymbiotic idea, the organelles, chloroplasts and the mitochondria came via prokaryotes which the previous host consumed but somehow managed to stay intact, benefiting one another. It evolved into a necessary endosymbiotic interaction which became an organelle during the evolution of the organism since both parties' existence depended on it.

• The endosymbiotic idea is supported by the finding of separate DNA in mitochondria & chloroplasts.

Evidence for this idea includes:

• Chloroplasts have the identical dimensions as prokaryotic, split via binary fission, and also possess Fts protein at the partition line, just like bacteria.
• The mitochondria of certain protozoans contain Fts homologs on the divisions axis and have a sizes as prokaryotes. They split by binary fission.
• Own circular, not linear, DNA is present in mitochondria and chloroplasts.
• The ribosomes found in mitochondria and chloroplasts have 30S and 50S subunits rather than 40S and 60S.
• Some further primitive eukaryotes microbes lack mitochondria but really do contain nuclear membranes, including Trichomonas.
• Flagella & cilia may well have originated via spirochetes, albeit the proof for this is not strong.

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