Reading wiki on mitochondria

Therefore, it is supported that reorganization of the mitochondrial network in muscle cells plays an important role in response to exercise

These independently evolved organelles play key roles in energy and homeostasis. But they live inside an evolutionary environment separate from our DNA. In the quote  above, we see the human can alter this ecosystem with repeated trials.  This is outside the realm of DNA sexual reproduction, and often in opposition to it.

The brain is an evolution of muscle, its mitochondria base expected  to alter considerably under learning drills, repeated emotional shock or surprise and wonder. We would expect changes to mitochondria network due to music, anything stimulating under repeated trials.   Likely the mitochondria are key to adapted learning and precede neural growth.

The  network would resist the sudden stimuli from emotional love, putting up a resistance. We have a duality between homeostasis and sexiality, the classic freudian I am. If the multi-cellular system captures the nutrient environment it is because of the mitochondria net maintains the container. Sexual reproduction punctures the containing vessel.  Hence the natural conflict.

The brains of this network is in the enter of the brain, hypothalamus. Here the  hormone precursors are released that activate the glands.  So we have the feedback, cortex can alter mitochondria net.  Self conservation and sexual reproduction both dominate on almost separate planes. I think evolution has two different life forms uniting in primitive bacteria. We carry some primordial soup around with us, that was the advantage of multicellular animals, sexual reproduction was the adaption of asexual, really asexual reproduction of the trapped species because the soup got inverted.

Consider the evolutionary problem soled.  We had this mass of single celled bacteria, massed together and asexually reproducing, then breaking apart. We want the mass to grow a certain size then stop reproducing, leaving the interior full of the soup. The winning virus can do that, but they kill the host.  You need to turn cell division back on again, and build another host. The solution is binary, two agents needed to restart a cell mass, thus neither party accidently cause unwanted cancer growth in the current host.  We get an alternation of generations.