What is analyzing crossbreeding? How can we determine the genotype of an individual with a dominant phenotype from the results of analyzing crosses?

Analyzing mating – mating of an individual having a dominant phenotype (analyzed individual) with a homozygous recessive individual to identify the genotype of the analyzed individual.
The genotype of the analyzed individual is determined by the phenotypes of the resulting offspring. If the offspring obtained by analyzing crosses is uniform in dominant trait, then the analyzed individual is homozygous. If, in the offspring, splitting is observed according to one or another characteristic, then the analyzed organism is heterozygous for this characteristic.

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.