Endosymbiotic Theory Video Lessons

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Concept: Endosymbiotic Theory

Problem: Which of these statements are both true and support the endosymbiosis theory? Select all that apply. a) Most mitochondrial genes are transcribed unidirectionally. b) Organelle DNA packaging is similar to the packaging of a bacterial chromosome. c) Mitochondria are similar in size to some existing bacteria. d) Many mitochondrial genes are polycistronic. e) Organelle DNA packaging is similar to nuclear DNA packaging. f) Mitochondrial genes are transcribed by a polymerase that is similar to bacterial polymerases. 

FREE Expert Solution

Recall: Endosymbiosis Theory


a) Most mitochondrial genes are transcribed unidirectionally.FALSE

Mitochondrial DNA is a double-stranded circular DNA which can be transcribed in two directions.

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Problem Details

Which of these statements are both true and support the endosymbiosis theory? Select all that apply. 

a) Most mitochondrial genes are transcribed unidirectionally. 

b) Organelle DNA packaging is similar to the packaging of a bacterial chromosome. 

c) Mitochondria are similar in size to some existing bacteria. 

d) Many mitochondrial genes are polycistronic. 

e) Organelle DNA packaging is similar to nuclear DNA packaging. 

f) Mitochondrial genes are transcribed by a polymerase that is similar to bacterial polymerases. 

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