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Multiple Choice
Which of the following statements about mitochondria and chloroplasts is correct?
A
Only chloroplasts contain their own genetic material; mitochondria do not.
B
Both mitochondria and chloroplasts contain their own genetic material.
C
Only mitochondria contain their own genetic material; chloroplasts do not.
D
Neither mitochondria nor chloroplasts contain their own genetic material.
Verified step by step guidance
1
Understand the question: The problem is asking about the presence of genetic material in mitochondria and chloroplasts. These are organelles found in eukaryotic cells, and the question requires knowledge of their structure and function.
Recall the key concept: Both mitochondria and chloroplasts are unique among organelles because they contain their own DNA. This allows them to produce some of their own proteins and enzymes independently of the cell's nucleus.
Review the endosymbiotic theory: This theory explains that mitochondria and chloroplasts originated from free-living prokaryotes that were engulfed by ancestral eukaryotic cells. Their retention of genetic material supports this theory.
Eliminate incorrect options: Analyze each statement. Statements claiming that only one of the organelles contains genetic material or that neither does are incorrect based on the scientific evidence.
Select the correct answer: The correct statement is 'Both mitochondria and chloroplasts contain their own genetic material,' as this aligns with their known biological characteristics.