Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) globozoospermia ?
    ### Response:
    Globozoospermia is a condition that affects only males. It is characterized by abnormal sperm and leads to an inability to father biological children (infertility).  Normal sperm cells have an oval-shaped head with a cap-like covering called the acrosome. The acrosome contains enzymes that break down the outer membrane of an egg cell, allowing the sperm to fertilize the egg.
    