Answer:
Cell, tissue, organ, organism.
Explanation:
Cells are the basic living unit of all of life and so they make up everything. Once cells bond together to carry out a specific function it is considered a tissue. Tissues make up organs which then make up an organism (like humans or animals).
The correct answer is D
As compared to nuclear DNA, the mtDNA (mitochondrial DNA) experiences very less mutations. Due to this slow mutation rates, it does not change much over the time. It makes it a good candidate for studying the evolutionary relationship between the species.
In addition, it is mainly inherited from mother’s cytoplasm which also allows the scientists to trace back the maternal ancestral lineage.
