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Which one of the following has its own DNA?
A
Peroxisome
B
Mitochondria
C
Dictyosome
D
Lysosome
Detailed Solution
Mitochondria (and chloroplasts) are semi-autonomous organelles.
The mitochondrial matrix contains a single circular DNA molecule, a few RNA molecules and 70S ribosomes, so mitochondria can make some of their own proteins and divide by fission.
Peroxisomes, dictyosomes (Golgi bodies) and lysosomes are single-membrane organelles without any DNA.
Hence the mitochondrion has its own DNA.
The mitochondrial matrix contains a single circular DNA molecule, a few RNA molecules and 70S ribosomes, so mitochondria can make some of their own proteins and divide by fission.
Peroxisomes, dictyosomes (Golgi bodies) and lysosomes are single-membrane organelles without any DNA.
Hence the mitochondrion has its own DNA.