In an exercise on genotype and phenotype, a student writes that the genotype of a tall plant is T. What is wrong with this?

توضیح

The plant holds two alleles of the gene, one on each chromosome of the pair, so its genotype is written with two symbols such as TT or Tt. A single letter names one allele on its own and leaves the second position blank, so it cannot say which combination the plant actually has.