3 Ways To Determine Genotype

It is customary to put a dominant trait (capital letter) on the top row and a recessive trait (lowercase letter) on the bottom if the two traits are different.

It is customary to put a dominant trait (capital letter) on the left and a recessive trait (lowercase letter) on the right if the two traits are different.

For mixed traits, write the genotype so that the dominant trait is listed first (Rr instead of rR).

The presence of the probe indicates that the sequence corresponding to the genotype in question is present.