"Ploynucleotide" is the one among the following macromolecules that would have to be discovered in this creature before scientists <span>could suggest that life on Earth and life on Mars have similar methods for storing and transmitting genetic information. The correct option among all the options that are given in the question is option "D". </span>
The answer to this question is the term parasitism. A parasitism is a non-mutual relationshio between species where in the other specie benefit from the other. The specie that benefit is called a parasite while the specie that was being used by the parasite is called the host.
Natural selection affects or changes a population and not only an individual organism because as there are somethings to be changed in a certain organism to adapt to the changes in the environment, all organisms in a certain species will be able to adapt and the changes therefore is collective.