Will give a branilest what did the extinction of the dinosaurs lead to? the collision of a comet with earth the extinction of birds the evolution of mammals the destruction of the ecosystem

S, tall stems (t) is a dominant trait while short stems (t) is a recessive trait. in a field of 1000 sunflowers, 820 are tall plants and 180 are short. which statement best describes the genotype of the sunflowers in the field?