Mutations that create small differences in the DNA sequence , making different versions of the same genes, best account for

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!