We’ve covered a lot of ground since we began a few months ago. In the next couple of posts, we’ll review the facts that have been presented thus far.
The 12.5 billion years following Big Bang witnessed six colossal and scientifically unexplained events. These events culminated with the first appearance of two genders: male and female.
Let’s work backwards. Over a long period time, the stuff that made males separated itself from the stuff that made females. Before that, the makings for the two genders were all mixed up in one complex cell. How did that material get into the complex cell? Whatever was necessary to cause genders to separate must have been drawn from those first complex cells.
That first complex cell was built from kinds of single-celled bacteria, the preceeding form of life. Those first single-celled organisms had to draw from what preceded them, but no life preceded them. From an ocean of chemical soup, green and acidic, were the ingredients that got together to form life. Where did they come from? Big Bang!
Remember, each step draws on what existed before it. The link from Big Bang to gender is undoubtedly complex; but it had to be there.
Right after Big Bang, a mysterious force caused matter to seek other matter, stopping the momentum to fly away in straight lines forever. This mysterious force: attraction. Attraction also brought those ingredients for first life together. Attraction brought two single-celled species together to make a more complex cell. Some sort of attraction got the male ingredients to a different place than the female ingredients in that complex cell. Some sort of attraction caused the two genders to separate and seek each other for the rest of history.
The appearance of gender was a critical in the evolutionary process. Clearly, an unexplained force was operating. Again, attraction is the key connecting word here, from start to finish, at every step. For instance, cells can signal one another—within cells, signals are sent from one part to the other. The idea of a mysterious force is not far-fetched. This force guided the pathway from Big Bang to gender. The best scientists do not have a cause. Think about it. Do you see a cause?
Over the time spanning from 1.2 billion years ago to 300 million years ago, life became much more complicated for those separated, two genders, finally leaving the water and walking on land. The attractive force between the two genders was obvious. The evolutionary process took off. It started with just a cell. Over time, though, the sponge appeared, followed by jellyfish. In both cases, gender attraction led to gender cooperation and gender cooperation led to reproduction. Those steps required communication. Communication needed to be stored – not yet in a brain, but in a pre-brain condition. That storage included both physical and emotional needs.
Sponges and jellyfish were soft. Soon enough, the precursor to bones appeared and, in a little more time, what is now your backbone developed, with a connecting cord to the brain. Environmental conditions, pure unadulterated randomness, and gender attraction led to rapid progress.
Next came fish and a bony skeleton. One type of fish moved into shallow, fresh water. Soon some male fish moved from spraying sperm over floating eggs to inserting sperm inside the female onto the eggs. That helped strengthen the bones that became arms and legs, which in turn allowed them to crawl out of water. Amphibians.
Water levels dropped sharply; egg-dropping places were hard to find. Internal fertilization was now common; that had to have a strong connection to gender attraction. The female did not just jettison eggs and move on; if a site for laying the eggs was not available, the female held them in. Time passed; the female held the fertilized egg longer and longer.
Soon females began to lay their eggs on land—no water needed. Parenting behaviors were first seen as fish spread, including behaviors to protect the eggs and the newly born. Emotional behaviors like fear, learning, memory, parenting, caring for others, and seeking one another have been documented. The reptile brain was pretty advanced. You, and all homo sapiens, still carry substantial remnants of that brain.