Answer: is D. Mercury was used to treat many illnesses long ago, and after being deemed safe by modern doctors its use has increased in the past 100 years.
Explanation:
A. is your correct answer.
"Gene families are groups of <span>homologous </span>genes that arose by gene duplication and sequence evolution."
Gene families are groups of various similar genes that are originated mostly by duplication, but also by evolution and relocation. These genes are distributed<span> into families taking into account shared nucleotide or protein sequences. </span>
B and C is where cell division takes place
There is not any nucleus and nuclear bound organelles in prokaryotes....
