I think the answer to this is 2.
<span>If a population of medium sized rodents is placed under a selective pressure that yields both very large and very small individuals it was most likely directional selection. I hope that this is the answer that you were looking for and it has actually come to your desired help.</span>
<span>They were produced by recombinant DNA technology. </span>
Environmental Threats have come upon Madagascar lately like, Deforestation and habitat destruction. Agricultural fires. Erosion and soil degradation. Overexploitation of living resources including hunting and over-collection of species from the wild. Its a very sad thing :(
