The formula of sex-linked inheritance is out of nothing, recessive inheritance looks at female disease, and father and son are sick for sex. There is middle-aged inaction dominance, dominant inheritance to see male disease, mother and daughter disease as partners. In a family with X-dominant inheritance, a man suffers from X-dominant genetic disease, and both his mother and daughter should be patients. In the dominant X chromosome family, the incidence of female is higher than that of male.

Sex-linked inheritance means that some traits of offspring are controlled by genes on sex chromosomes in the genetic process. This inheritance mode of traits controlled by genes on sex chromosomes is called sex-linked inheritance, also known as sex-linked (inheritance) or sex-linked connection. Many organisms have sex-linked inheritance, and the most clearly understood is the sex-linked inheritance of red-green blindness and hemophilia.

Sex-linked genetic formula

Making something out of nothing is recessive: if parents are not sick and children are sick, it is a recessive genetic disease.

Recessive inheritance to see female diseases: if it has been diagnosed as recessive inheritance, find female patients.

Father and son have the same disease: if her father and son are both patients, it is recessive inheritance of X chromosome; As long as one of them is normal, it is autosomal recessive inheritance

There is a dominance of middle-aged inaction: if parents are sick and children are not sick, it is a dominant genetic disease.

Dominant inheritance to see male diseases: if it has been determined that it is a dominant genetic disease, find a male patient.

Mother and daughter are accompanied by illness: look at his mother and daughter, if they are both patients, they are accompanied by X chromosome dominant inheritance; As long as one of them is normal, it is autosomal dominant inheritance.