"Which of the following is evidence that mitochondria have an endosymbiotic origin? A. They contain their own DNA B. They produce ATP C. They are enclosed by a membrane D. Mitochondrial diseases are maternally inherited"

A. They contain their own DNA

Explanation:

Mitochondria is a eukaryotic cellular organelle which is thought to be evolved by the symbiotic relationship between the prokaryotes and the proto-eukaryotes.

The mitochondria were once a free-living prokaryote which during the course of evolution was engulfed by the proto-eukaryote. They formed the symbiotic relationship with each other and the prokaryote evolved into the mitochondria.

There are many pieces of evidence which suggest the endosymbiotic hypothesis one of which is provided in the option is that they contain their own DNA just like the prokaryotes that is one circular DNA present in their cytoplasm not enclosed by the  

Thus, Option-A is correct.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

where is the option.let me know