Recent content by BillTre

"I wonder about a mechanism that causes this asymmetry" Trivially, since I don't know anything about it, I would guess unequal growth.

However, embryology has built up its own set of terms among the great variety of embryos. This can be pretty obscure to most people.

This sounds like the difference between a K selected species and an n selected species. Generally, a K selected species invest more into complex life form well adapted to its particular environment. An n selected species will have more general and less specific adaptations and will produce more...

Well, they would probably practicing recombinant genetics to adapt to different environments. But, beer always (the essence of being human).

Where the girls? Need them for making any population increases. Also TV is lacking.

This is correct. Not only does it just happen, but is to some extent required for human health and proper development. Guts of mice without a gut biome do not develop properly and their efficiency of food utilization is reduced. That is just wrt to human body. However, the easiest way to...

There are certainly a lot of possible paths. I don't know what exactly would happen but one of the largest things affecting rapidity of change is the population size (really the effective population size), thus sperm storage etc.. After they leave and they are on their own, each group will be...

The scenario of the slow spread of humanity through the galaxy on generation ships has some interesting possibilities. Generation ships of non-frozen populations would lead to the divergent evolution of each if the separate groups of people went to different places. Small populations isolated...

I have come to feel that thermodynamics rules in many of these evolutionary events.

For a while, I had a job recovering corneas from dead people. It was an iI also got to interact with the collectors of other body parts of the dead. The cells don't all die when the body does and thus retain some usefulness for a while. Because of their slow metabolism and reduced needs for...

Who are you to say what has to do with definitions of life? There hundreds of them. One of the most prominent ones is the NASA definition states: life is a self-sustaining chemical system capable of Darwinian evolution. This has been merciously ridiculed since it was made in the 1990's (much as...

Makes sense to me based upon the particular definition you use, which often involve being able to reproduce. Are individuals not alive then? How would you apply such a definition to particular organisms? These are among the problems that some of these definitions have to deal with. If they...

The Fermi paradox is specifically about advanced life able to make contact with us. This is different from the origin of life, but life originating (once at least) is a condition that enables any higher life forms. This is how I think about this group of issues: origin of life (an emergent...