The doctor has used INDUCTIVE REASONING. Inductive reasoning refers to a logical process in which multiple premises are combined to obtain a specific conclusion. The doctor used inductive reasoning to obtain the facts about the patient's symptoms.
This question is not clear, but I think I understand what you are asking. The difference between alleles of a gene is that some alleles may be dominant or recessive. If one gene has more dominant alleles than another, than it will be more visible.
In comparison to eukaryotes, prokaryotes -Are smaller and lack a nucleus-
The name that is given to cell division in prokaryotes is C) Binary Fission.