The chances of any variation of cardiac tissue manifesting itself on the nose, leg, finger, heart, etc. are equal.Are you sure? Can you link us to any sources that explain how this was determined?
@towerwatchman – That is outdated thinking. Things are way more complex than that. Stop using 50 and 100 year old arguments to dispute the science of today!You may want to look at this.
Human Chromosome 2 is a fusion of two ancestral chromosomes, Alec MacAndrew
All great apes apart from man have 24 pairs of chromosomes. There is therefore a hypothesis that the common ancestor of all great apes had 24 pairs of chromosomes and that the fusion of two of the ancestor's chromosomes created chromosome 2 in humans. The evidence for this hypothesis is very strong.
Let us re-iterate what we find on human chromosome 2. Its centromere is at the same place as the chimpanzee chromosome 2p as determined by sequence similarity. Even more telling is the fact that on the 2q arm of the human chromosome 2 is the unmistakable remains of the original chromosome centromere of the common ancestor of human and chimp 2q chromosome, at the same position as the chimp 2q centromere (this structure in humans no longer acts as a centromere for chromosome 2.Conclusion; The evidence that human chromosome 2 is a fusion of two of the common ancestor’s chromosomes is overwhelming.
This is an example of a beneficial mutation (fusion) in the DNA resulting in the emergence of Homo Sapiens.
One has to define what is beneficial.
Not being extinct is beneficial. NS is a passive selector. If you survive to breed and add to the gene pool then that is beneficial.
It is not complicated. You are a product of natural selection, but if you fail to obey natural laws you will perish and become extinct. A genetic cul-de-sac.
Continuing…
It seems to me that natural selection is busy creating a new human species.
Homo Universalis, a golden skin mixture of all individual human species via cross breeding.
It is the purists (white supremacists) that are resistant to this desirable evolutionary process. They see this as a degradation instead of an integration of desirable genes.
Each variety of humans have special survival abilities. That’s why they are not extinct.
Thus mixing all these successful genes can only result in a general improvement of the species and eventually result in a new species; Homo Universalis.
Sounds like a mixing of cultures, with some cosmetic traits that comes with it. I don’t think that qualifies as “species”.
I’m being technical. It’s not that I’m against mixing cultures, or the evolution of ideas
You are correct homo sapiens is now only divided by cultures.
But there is also a demographic classification.
What are the 6 human races?
Johann Friedrich Blumenbach’s classification, first proposed in 1779, was widely used in the 19th century, with many variations.
- the Ethiopian/black race.
- the Caucasian race/white race.
- the Mongolian/yellow race.
- the American/red race.
- the Malayan/brown race.
And you are right. our differences are mainly cosmetic. And over time, as a result of cross-breeding, these cosmetic difference will eventually meld into a more or less uniform pattern .
Which would fall outside these identified racial varieties and might be named the Universal human race or “Homo Universalis”.
I kinda like that term. It sounds all inclusive.
Admittedly, sometimes, it can be hard to get people to stop doing something. You have to provide a replacement.
But, from the wiki,
" There was much prejudice based upon this way of thinking and speaking. It argued that in the races that make up the human race, there are deep, biologically determined differences"
Yes, and those were shaped by the specific environment and the separation caused by difficulty in long-distance travel, which started with sailing ships and might take years at sea. This is no longer the case. We can travel around the world in less than 3 days.
So, how long does it take to fly around the world in a passenger plane? With refueling, it will take around 60 hours to circumnavigate the globe in a passenger plane.
Mar 17, 2023
How Long Does It Take to Fly Around The World? ⋆ Expert World Travel
Clearly, an increased intermingling rate of different native populations is taking place. A few more centuries and there will emerge a large population with a new integrated genetic pattern from all corners of the world.
Therein lies the rub.
I’ll spare you the details. 
Full speed ahead.
Yet there is only one race- the human race.
True, but I am making a loose comparison with Darwin’s Finches and their biological difference, each species successful in their own environment.
Finches of the United States: A Photo List of All Species
February 12, 2021 · Kathryn Stonich
Note that I predicted a melding of all human species and the emergence of a single mixture of all different gene pools into one large gene pool of “Homo Universalis” … 