The instructions for the traits of an organism are coded in the arrangement of
energy-rich bonds in starch molecules
glucose units in carbohydrate molecules
fat molecules in the cell membrane
bases in dna in the nucleus

The correct answer is bases in DNA in the nucleus.

Explanation:

DNA act as repository of genetic material.DNA contain nucleotides in which the genetic information is being stored.

       The proteins that are formed from RNA(which is in turn formed from DNA ) to carry out the central dogma of molecular biology.

  The bases or nucleotides those are present within DNA molecule in the nucleus generate instruction for the traits of an organism.

not always but somethings can be reproduced in a laboratory.

answer; blending inheritnace;