ANSWERS: 2
-
Yes. Certain chemicals and ionizing radiation can cause damage to the DNA of individual cells, and when those cells replicate, those changes will be carried on.
-
Also, in every individual DNA is being replicated constantly and natural mutations happen occasionally throughout one's life in every human being or organism depending on the organism. Mutations are in every individual and most occur naturally throughout a person's life due to DNA replication but are not apparent because the mutations are more than likely on an area of "noncoding" DNA since the majority of DNA is noncoded.
Copyright 2023, Wired Ivy, LLC

by 