Mitochondrial DNA
A - VCE - SSCE Biology - Question 5 - 2008 - Paper 1
Question 5
Mitochondrial DNA
A. is a linear molecule.
B. is inherited only from the female parent.
C. exists in mammalian cells but not plant cells.
D. contains the same am... show full transcript
Worked Solution & Example Answer:Mitochondrial DNA
A - VCE - SSCE Biology - Question 5 - 2008 - Paper 1
Step 1
A. is a linear molecule.
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Answer
Mitochondrial DNA is actually a circular molecule, not linear.
Step 2
B. is inherited only from the female parent.
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Answer
This statement is correct. Mitochondrial DNA is inherited matrilineally, meaning it is passed down from mothers to their offspring.
Step 3
C. exists in mammalian cells but not plant cells.
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Answer
This statement is incorrect. Mitochondrial DNA exists in both mammalian and plant cells, as both types of cells contain mitochondria.
Step 4
D. contains the same amount of uracil bases as adenine bases.
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Answer
This statement is incorrect. In mitochondrial DNA, thymine is present instead of uracil, similar to nuclear DNA, and the amounts of bases do not correspond in this manner.
