Answer:
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.
Answer:
C.
Explanation: It lasts until all the codons are read,so it encounters a stop codon.
vestigial limbs
vestigial limbs are the remnants from the development of any one organism's ancestors.
Humans, for one example, have no real need for an appendix now that we are no longer herbivores.
Look at a x-ray image of certain snakes and you can see the structural remains of feet.
Answer: Concentrated in certain areas
Explanation:
Volcanoes are usually formed as a result of collisions or other activity between plates at plate boundaries.
As a result, they are more usually concentrated in zones where there is more plate activity such as at the edges of continents, on islands and beneath the seas in certain areas because this is where plates usually collide with each other.
Choosing to breed two naturally fast horses would result in an amazing race horse or breeding a horse with good cardiovascular health with a fast horse would result in an even better race horse!