Semen is the thick fluid that contains the sperm that is basic in nature, thus protecting it from the acidic nature of the vagina.
Explanation:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
answer: The sperm will not survive the acidic conditions in the vagina
The fluid produced by the urethral glands neutralizes any residual acidity in the urethra (left there because of the urine that passed previously), that way it won't harm the sperm. For the same reasons, helps to neutralize the acidity of the vagina.