Mitosis occurs<span> in the cell nuclei of eukaryotic cells that are not related to reproduction, while meiosis takes place in the cell nuclei of eukaryotic cells that are related to reproduction. During mitosis, a cell divides into two identical daughter cells which are used for the growth and replacement of worn cells.</span>
Why dont you try asking google or a teacher to help you out?! :D
Genetic diversity serves as a way for populations to adapt to changing environments. With more variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment. Those individuals are more likely to survive to produce offspring bearing that allele.
The answer is the first one.