What is called crossbreeding?

Crossbreeding, in which the parent forms differ in two pairs of alternative characters, is called dihybrid. If parents differ in many pairs of alternative characters, crossbreeding is called polyhybrid.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.