Answer:
B. 4
Step-by-step explanation:
The maximum number of different allele combinations that can normally be formed in gametes produced from a cell with PpTt genes for flower colour and stem height will be four (4) possible combinations. Half of the gametes get a dominant P and a dominant T allele, the other half of the gametes get a recessive p and a recessive t allele. Both parents produce 25% each of PT, Pt, pT, and pt.