A molecule that can act as a genetic material must fulfill the traits given, except

The correct option is D it should be unstable structurally and chemically

Characteristics of genetic material:

1. It should be able to replicate, i.e., it should have the ability to make identical copies of itself.
2. The genetic material should be less reactive and stable structurally and chemically.
3. It should be able to undergo mutations at a slow rate, which are required for evolution.
4. It should have the ability to express itself in the form of ‘Mendelian characters’.

The statement in option D does not fulfill the criteria of the genetic material. The genetic material should be stable otherwise its expression will change leading to loss of several functions.

Hence, the correct answer is option D.