Well, I listen to a lot of scientists, although I don't udnerstand half of what they say.That is a very profound question. The more I suppose one knows, the less the person realizes how little they know and humanity knows. Look at computers, in such a short time what has been accomplished. That is not about evolution, but knowledge.
THERE ARE EXCEPTIONS IN EVERYTHING, DON'T ANYONE BE "THAT GUY"
This is a simple explanation. You started off with a cell from half mom and half dad. You keep a "good" copy in the fun zone that is saved for reproduction. See, someone will write "NO ALL OF REPRODUCTION" Ask around here and you'll be told gray hair and other aspects of aging are due to a curse from God or whatever. Our non-reproductive cells are immortal. You can pass that down and over and over and over. The rest of your stuff is mortal. Do not take that in a religious way.
Mortal means your DNA is designed to make you go buh bye. Now evolution might favor turn over, or that this awesome thing is still alive and has something going on. Some living organisms are immortal, meaning there are no limitations to their lifespan outside of what would kill them off years ago.
So we have the cells with the same DNA as the cells that preserve the sacred jewels in ...the sacred jewels. This is where it gets complicated. If you are exposed to radiation, sunlight, smoking, all the fun things, you will get mutations that can result in cancer and other issue. Cancer is also a result of genes and lifestyle and a million other things.
In the baby making process are various factors where chromosomes swap things before and after. This is not an area I am an expert. Does lifestyle of the mom or day affect baby gravy? Maybe?
We know this is true in observable, real life examples, in the use of predators or pesticides or antibiotics. Why do they continue to make more and more antibiotics? Conspiracy? No. However, there is a serious issue of giving drugs to wipe out a germ. Simply, make a drug that wipes out the "orange" bacteria with some red mutants floating around. The patient recovers 99.99% of the time. But now there is nothing for the "red" and everyone is getting sick.
However, since I was about 12 I wondered what makes the heart beat.
Does it begin all by itself?
Scientists that are not even Christian are leaving the idea of macroevolution because it cannot be proven as Darwin had hoped. If fact, Darwin stated that if a sudden burst of different life forms were ever discovered, he'd have to rethink his theory.
I give you the Cambrian Explosion.
No explanation for it...at least not scientific explanation.
I asked you HOW a cell chages..WHAT makes it change.
You said, maybe radiation. But what sends it the MESSAGE to change??
We know but have no explanation for it.
I certainly cannot repeat what Dr. Noble states...
so I'll post this video FOR ANYONE INTERESTED to know more.
Science is realizing more and more that there is a complexity to all of this that cannot be explained by materialism.
The second video explain more about cells, how they can change, how messages are received, etc.