Context: In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele H is for a tall stem, and the allele h is for a short stem.
A certain pea plant from this group has a tall stem. This plant has two alleles for a tall stem.
Based on this information, what is this pea plant's genotype for the stem height gene?
A. HH
B. a tall stem
Select the correct answer from the provided options and reply with the letter associated with it.
Answer: A