A membrane-bound organelle at the tip of a sperm derived from the Golgi apparatus, which contains lytic enzymes that digest the outer coatings around the egg so that it can enter the ovum and inject its haploid DNA (see figure below).
Acrosome at tip of sperm and related structures
See DNA (deoxyribonucleic acid), Enzyme, Fertilization (or syngamy), Flagella, Golgi apparatus (body or complex or organ), Haploid, Microtubules, Mitochondria, Organelles, Spermatozoa