If gene mutation is not considered, it can be considered that Meijian is inherited by a single gene autosomal dominant inheritance. If both parents have beauty tips, they can be regarded as Aa×Aa, and the probability of offspring being Aa is 1/4. The recessive gene expression is not beauty tips.
Genetically, the parental traits of the first generation of purebred hybrids with a pair of relative traits are called dominant traits, and the genes controlling the dominant traits are called dominant genes; Parental traits that are not revealed are called recessive traits, and genes that control recessive traits are called recessive genes. Dominant genes are usually represented by capital letters, while recessive genes are usually represented by lowercase letters.