Mitochondria Are Thought to Be the Descendants of Certain Alpha

question 4

Multiple Choice

Mitochondria are thought to be the descendants of certain alpha proteobacteria. They are, however, no longer able to lead independent lives because most genes originally present on their chromosomes have moved to the nuclear genome. Which phenomenon accounts for the movement of these genes?

• A) plasmolysis
• B) conjugation
• C) translation
• D) horizontal gene transfer

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