<span>prorostomes and deuterostomes is your answer</span>
Tt is a genotype different than tt. The first one has two different alleles (T and t) the second one has one kind of alleles (t).
The fenotype of Tt is given by the dominant character (which is the capitalized one, T) while the fenotype of tt is t (because it is the only one).
Then, there are two different genotypes and two differente phenotypes.
Answer: The two have different genotypes and different phenotypes.
Let's look BB and Bb
They both have the dominant trait which means they both have the same physical appearance (phenotype) , but while BB has both dominant and Bb has one dominant and one recessive that means that although Bb has the same phenotype as BB, it has a different genotype because it has a bit different genetic makeup
