1.well mutations can cause cancers and alot of diseases however in some cases mutations can be good. for example people in Africa are not affected by malaria
2. the deletion or addition basically change of order in the genetic code. for example A goes with T. DNA can be damaged if A is paired with C
D I think I hope this helped
<span>It Mitosis, it’s a process that replace every cells in
the human body every few years. The process performed by Mitosis is divided
into stages.
These are:
=> Prophase
=> prometaphase
=> metaphase
=> anaphase
=> telophase
When mitoses starts to do its process, the chromosomes condense and become
visible. This process is very important because it maintains the chromosomal
set of our body. It replaces those sloughed off cells into a renewed one. It
can also help us to heal our body scratches.</span>
<span>Meiosis is the cell division process that produces gametes (sperm and egg).
</span><span>It products half the number of chromosomes (23 - a haploid cell). When the gametes fuse together, they produce 46 chromosomes.
</span>
Hope this helps :)