Essay Help

On question 2, where it asks you to find the genotypes of the parents. Do a test cross on the F1 generation.

Example: If you know a plant has the tall trait, you have two choices of the genotype. (TT or Tt)

To do a test cross you would cross it a recessive plant (tt)

If the phenotype of the offspring is 100% dominate you know the parents genotype is (TT).
If the phenotype of the offspring is 50% dominate and 50% recessive you know the parents genotype is (Tt).

Do a test cross (using Punnett square) on the parents and compare results with the observed F1 generation and you will be able to tell the genotype of the P generation.

Hope this helps.

Mrs. Stebly