because its a free country
It wasn't. Lethal amounts of radiation still exist in certain areas.
they are rarely lethal but can still kill a human
Historically, yes, they were once found there. It is possible that a small population may still exist in wild areas, where human populations are low.
Single cell organisms still exist because populations evolve, rather than entire species. Additionally, if an organism is fit in it's environment, it is not pressured into evolving.
yes, because we still exist
yes it does still exist :)
Yes, they still exist.
Yes they still exist
Yes, THEY STILL EXIST
Yes, many aircraft still exist.
Essential genes are genes that are indispensable to support cellular life. These genes constitute a minimal gene set required for a living cell. Nonessential genes are the opposite. The cell can still live without them.
Ressesive genes my friend. Two ressesives make blonde, while you can still get black while have a dominat and a ressesive. Therefore the gene is still carried on from the random selection of DNA during mitosis in the egg or sperm cell.