late wrote:Species have diversity to help deal with change.
Variation is a survival mechanism. Without it entire species can and do get wiped out when faced with a plague or a disease.
Variation is in every life form. Do you remember late those pea experiments from Malthus?
It means that genes contain information that is not going to be expressed in every generation.
There are again scientific aspects to variation. It is there because it is a part of the gene code. It is linked with survival. For the entire homo sapiens s. species. Not just one part of it. But all of it.
@Potemkin is also correct that you can have various genera or species of an organism and if conditions change one genus of them could go extinct or be absorbed. The base of biological life is about adaptive abilities and all of our ultimate destinations in evolutionary theory is extinction. That is our destination as a species. How long does it take and how well do we do with adaptation to the changing environment? That is what our time to become the species that is our best expression about. But that we will be gone at some point in the far away hopefully future if we do not nuke ourselves first, is to be helped along with varied forms of humanity. The European-looking ones, the African-looking ones, etc. We need to have that variation to make sure like the pea plants, if we need to pull one of our many forms out of obscurity we can do it because the environment is calling for a specific change to help us. I have to stay with many answers to the external world. Variation is the best mechanism for it. Those calling for purity and ending diversity out of fear are saying that they do not want life on Planet Earth. They want death or fewer possibilities to keep living on into new generations with new combinations of being human.
Biological diversity exists in humans because it exists in nature. As such, trying to separate diversity or variation from humanity is like trying to separate it from the reason it exists. It is foolish to do so.
But if you are a racist you can't accept that part of it.
You need to think of diversity and variation as something unnatural or not very important.
It is again illogical to think that way.
But whoever said racists are logical people anyway?