Containing and transferring traits from a previous environment that constitute advantages in one's new environment is known as pre-adaptation. During the breeding process, traits are passed on to future generations. What's interesting about traits is that they don't evolve because organisms need them to evolve or to help them adapt to their environment. Traits evolve simply because of chance. For example, according to early human brain-swapped bites, there was a trait mutation that weakened human jaw muscles. When jaw muscles were weakened, it allowed humans to make room for our brains to develop. The subsequent effect was that this made the human brain larger, thus giving humans the ability to have better cognitive ability compared to others.