Why do you say that men can carry on the family line? Can he do it by himself?

Genetically speaking, men and women are unparalleled in a certain generation. Can it be understood as a drop in the bucket? Except Y chromosome, other autosomes undergo homologous recombination during meiosis, so those chromosomes were not directly inherited by ancestors thousands of years ago. This is why geneticists can't use autosomes to track the lineage of sexually reproductive species, including humans. In order to trace the pedigree inheritance of organisms, geneticists have to use the information that Y chromosome will not exchange genetic material with chromosomes from maternal ancestors to calculate the situation of our male ancestors. For example, the common ancestor of human beings all over the world should have lived about many years ago. But thousands of years ago, the Y chromosome of our ancestors would not make us different from others. If we are really different from others, we should consider the genes on the autosome given to us by our parents now, not the famous or unknown ancestors thousands of years ago. In addition, we should know that we can't live without the X chromosome provided by our mother. There are about 2000 genes on the X chromosome. From the simple ratio, we can know that mother's influence on us is actually greater than father's, but the Y chromosome makes us men.