Explanation:
DNA is the genetic material in most living organisms. It is the information hub of the cell that contains instructions for the synthesis of proteins. The central dogma of molecular biology is that DNA undergoes replication to create copies of itself, undergoes transcription to create expressible mRNA and this mRNA undergoes translation so that protein can be formed from the information carried in mRNA
Cell division is the process of division of cells into daughter cell. Generally, the cell divides by the process of mitosis into two daughter cells. The replication of DNA occurs in the S phase of cell cycle.
After replication, the chromatids of chromosomes A and X would look like as below.
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