3) Genotype: 2 Tt and 2 tt plants. Phenotype: 2 tall and 2 short plants.
4) Genotype: 2 Rr and 2 rr plants. Phenotype: 2 red and 2 white plants.
Explanation:
See attached files. I had to upload the answer as text in a separate file because due to some error in the page, it did not allow me to send the answer.