The answer is; B
Meristem cells are totipotent meaning they can differentiate to any type of plant cells. Therefore they can produce a variety of plant type depending on epigenetic. However, tissue culture is derived from already differentiated cells. Therefore these cells are already determined and can only produce cell type of that plant from which they were derived.
So other scientists can try the exact same experiment and see if they both got the same results.
Answer:
the intensity of density dependent factors increase
Considering Tall is capital T
Genotypic: 50% hetero dom and 50% homo recess
Phenotypic: 50% tall and 50% short