Answer:
Given that a negatively charged rod is brought closer to two metal spheres which are in contact with each other as shown: So, free electrons from rod will be attracted towards the metal spheres.
This demonstrates Mendel's law of independent assortment.
The law of independent assortment refers to the independent separation of different genes when the reproductive cells are formed. Mendel's experiments included crosses of organisms that differed in two traits. He observed that the combinations of traits in the offspring did not always match the combinations of traits in the parent organisms.
Compression and stretching are actually caused by the stress on the both.
Compression happens on the side of impact and Stretching happens ont he side opposite to that of the impact.