Dna replication occurs prior to meiosis and

Hello,

The answer is option A "mitosis".

Reason:

Mitosis one of the stages of a cell where the cells are separated into two chromosomes therefore putting them into a nucleus. Its not option B because cytokinesis is another part and divides one cell into two daughter cells (which means this is involved of the sex of the child). Its also not D because transcription is involved in gene expression.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit