• Humans are not dogs. Racists love to compare humans to dogs in order to make racist arguments. Humans are humans. Humans are not pure bred and there is no master who directed the breeding of humans. So to compare humans to dogs is not logical.
• Wikipedia references are fine because if you follow it then you can find more scholarly references from there.
• DNA doesn't decide almost everything. DNA is nature and environment is nurture. The genes are more diverse within your own race than between the races which means race has nothing to do with this.

You can make a case that Wikipedia has a political agenda but so do you apparently. Science has already spoken and the consensus among researchers in genetics is that race is merely a social construct. You think they are all liberals? You think otherwise? Get your own genome sequenced and find out if you're pure "white" or whatever you estimate you are.

References

1. https://www.scientificamerican.com/article/race-is-a-social-construct-scientists-argue/