Xx Only Xy Tee Chromosomes Genetics Science Tee

Xx Only Xy pairs a simple phrase with genetics and chromosome science. It gives the joke a direct, casual feel without adding extra clutter.

Wear it to a science fair, a lab study group, or a class project meeting with jeans. A heather gray shirt keeps the look easygoing.

Genetics fans, biology students, and lab coworkers can all get a laugh from the message.