Mitochondria Are Thought to Be the Descendants of Certain Alpha-Proteobacteria

question 74

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 chromosome have moved to the nuclear genome. Which phenomenon accounts for the movement of these genes?

• A)horizontal gene transfer
• B)binary fission
• C)alternative gene splicing
• D)meiosis
• E)plasmolysis

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