The correct answer was given: Brain
Dna is deoxyribonucleic acid.
it is a hereditary material. it stores all the vital information.
the genetic information stored in the nucleotide sequence of dna in synthesis of specific proteins or polypeptides and transmit the information to daughter cells or off -springs. thus dna is called as molecular blueprint or thread of life.
do you know it has one more valuable importance.
in case of any apocalypse, dna can be used to evaluate or re establish any extinct specie.