difference between two individuals is due difference in : a) DNA only b)DNA and protein
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DNA , proteins are present in all , and we all have certain protein that are made up of 21 fundamental amino acids , so hence could not be the base of differentiation .!!
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The correct answer is
a. DNA
DNA or Deoxyribonucleic acid is the most unique part of a cell that consists of genetic information.
Proteins are present in every individual and they are composed of amino acids that are structurally similar, so cannot be the mode of differentiation of traits in different individuals.
Since the genetic information encoded in DNA is specific, it is the correct option.
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