Human Nature
When humans first domesticated plants and animals they overrode natural selection in order to favour certain physical and behavioural features over others. Most domesticates don’t do well in the absence of humans, because the characteristics that were selected by humans, such as tameness and docility, are not advantageous in the natural world. It’s fair to say that at least a part of their nature is determined by human choice and not natural selection. Analogously, most humans wouldn’t survive in a natural environment without other humans to cooperate with. A mountain lion or a bear doesn’t need to be around others of their species to survive, and they are not socializers, except when it comes to mating time. Humans are a social species but a social species that is unlike any other. Just as we’ve prospered by selecting and maintaining certain advantageous features in domesticated plants and animals, we prospered even more by collectively selecting certain human moral character