1. On the chromosome, under the action of powerful genes, dad's X gene will be stronger, which will make his daughter more like dad. According to the average probability, 70% of the daughter's appearance factors are inherited from her father. In particular, the obvious dominant genes on dad's face, such as double eyelids, high nose bridge or thick lips, are easier to copy to his daughter's five senses. Generally speaking, fathers are good-looking and daughters are never bad. Genes (genetic factors) are all nucleotide sequences needed to produce polypeptide chains or functional RNA. Genes support the basic structure and expression of life. It stores all the information about race, blood type, gestation, growth and apoptosis of life. The interdependence of environment and heredity deduces important physiological processes such as life reproduction, cell division and protein synthesis. All life phenomena such as birth, growth, decline, illness, old age and death of organisms are related to genes. It is also an internal factor that determines the health of life. Therefore, genes have dual attributes: materiality (mode of existence) and information (fundamental attribute).