Indicate the analyzing cross in which the heterozygous individual is involved.

Aa x aa
In order to establish the “purity” of the body, an analyzing cross is performed, in which the studied individual with dominant traits is crossed with a recessive homozygous (aa). If the offspring from such a cross appears homogeneous, then the individual is homozygous (its genotype AA). If in the offspring there will be 50% of individuals with dominant characters, and 50% with recessive ones, then the individual is heterozygous (its genotype Aa).