Question

unlike most other organelles, mitochondria contain their own dna. this dna is in the form of a double - stranded, ring - shaped molecule that can replicate. the number of mitochondria in a cell can increase when mitochondria reproduce. mitochondrial dna mutates. some of these mutations have been linked to certain diseases in humans. mitochondrial dna is passed on to children through their mothers. the chart to the left illustrates this process. 8 provide evidence from the mitochondrial inheritance chart that supports the claim that mitochondria are usually inherited from the mother. 1

Explanation:

The chart shows that when the father has the disease (mutated mitochondria), children do not have the disease. But when the mother has the disease (all mitochondria mutant), children have the disease. This indicates that mitochondria are usually inherited from the mother as the trait is passed on only when the mother has the mutant mitochondria.

Answer:

When the father has the disease, children do not have it, but when the mother has the disease, children have it.