There is an important philosophical question: first father or first son, we generally say chicken or egg first?
This problem is discussed a lot, in fact, it is a brain teaser problem, before the son came out, that person is not the father, generally speaking, a social attribute of what people inherit is not just the blood of the father, the blood of the father is only one of them, we call it blood. The Chinese we are talking about today is called Wen Vein, and there is also another one called Bacterial Pulse, and your microorganisms are also inheriting and transmitting. Wet nurses, especially nursing mothers, basically pass on the genes of this part of a large number of bacteria to you, along with the flora.
There is a very important concept in genetics called epigenetics, that is, my genes have not changed, but the location of these genes has changed, and at this time you present a different state. Therefore, such heredity is also our definition of the two words of heredity today, both blood veins, both context, both fungal veins, and an extra layer of epigenetic content. It allows us humans to naturally inherit memories that we didn't have before.
I often give two examples, everyone understands, this mouse has seen a cat, has not seen a cat, and is afraid when he sees it, no matter how big or small. This memory of fear is written down genetically. There is also more direct evidence, that is, there is a very small worm, we call it nematodes, this nematode knows which bacteria to eat will poison themselves and die, and then it will tell the next generation through genetics, and then see this bacterium in the future do not eat, it will be passed down through the way of mRNA, similar to vaccines.
Therefore, if this thing rises to the cultural level, it should have a genetic element, and it cannot be said that it cannot be inherited at all, both innate and acquired. People have certain talents, but I am saying that genes cannot detect talents, and these two are not contradictory, plus acquired learning.
All of our mitochondria are the engines in the cell, there are almost no mitochondria in sperm, the mitochondria mainly come from eggs, and men give genetic material, so the mitochondria are basically from the mother, and when we go back, everyone has to go back to a mother who is the mitochondrial - Eve, about 200,000 years ago. The Y chromosome must have come from Daddy, so you can also find a Y chromosome, Adam, about 200,000 years ago, but the two are not a pair. This is our current genetic evidence, all in Africa.
There is a joke in medicine, or scold us men: the real impact on human health is the old men who still have fertility. What does that mean? It is that the cigarettes you have smoked, the alcohol you have drunk, the battles you have fought, and anything you have done are recorded in your sperm, and you will produce methylation in an epigenetic way when your sperm is doing meiosis, and more is the accumulation of harmful mutations, over thirty-five years old, with an average of two more mutations per year, which can be measured at present.
There are many sperm banks in this world, do you know which country one of the most famous sperm banks in the world is? The country has the highest male height, an average height of one meter eighty-seven, and yes, the Netherlands. So the Dutch sperm bank everyone wants it, because even if I don't get married, I want to have a child. However, there is such a high IQ, high education, and very handsome, excellent in all aspects, but he donated ninety percent of the sperm, ninety percent of the autism, the offspring born are autistic, through the sperm to bring the gene of autism into it.
Sperm is a competitive system, male sperm quality is constantly declining, we have to admit this, and eggs are rationing system, eggs from the day you are born, the number is a certain, so the child still has to be born early!