Question

which best describes mitochondrial dna (mtdna)?
mitochondrial dna is the same as nuclear dna.
mitochondrial dna is inherited through the father.
mitochondrial dna can be traced for generations.
mitochondrial dna requires large amounts for testing.

Explanation:

Mitochondrial DNA (mtDNA) is distinct from nuclear DNA. It is inherited maternally (not through the father). It has a relatively high copy - number in cells, so it does not require large amounts for testing. mtDNA is passed down through generations with relatively slow - changing sequences (due to less recombination compared to nuclear DNA), allowing it to be traced for generations.

Answer:

Mitochondrial DNA can be traced for generations.