Question

17.5. illustrate the inheritance of mitochondrial dna as compared to nuclear dna.
of a childs eight great grandparents, how many contributed to her mitochondrial dna?
0 1 4 8

Explanation:

Mitochondrial DNA (mtDNA) is maternally inherited. Only the mother passes on mtDNA. Among the eight great - grandparents, only the female line (maternal side) contributes. But when tracing back through generations, only one of the eight great - grandparents (the maternal line's female ancestor) could potentially contribute to the mitochondrial DNA (assuming no mutations or losses in the maternal transmission line). Nuclear DNA is inherited from all ancestors (father and mother contribute, and their ancestors contribute).

Answer:

1