I would go with mathmatical formula because of physics and what not but I'm not completely sure so if you have a different possible answer you think would be better, go with that :)
Answer:
To study genetics, Mendel chose to work with pea plants because they have easily identifiable traits.
Explanation:
For example, pea plants are either tall or short, which is an easy trait to observe, with that being said pea plants grow quickly, so he could complete many experiments in a short period of time.
Answer: the failure of one pairs of homologous chromosomes
Explanation:
It is true that the water that came from your faucet could contain molecules that Neanderthals drank.
This is because there is the same amount of water today on Earth as there was when Earth was formed 4.6 billion years ago. That is to say that the water that Neanderthals used to drink millions of years ago when these early archaic humans inhabited our planet.