1. female cattle that are sterile due to being born as twins with males
Usage: veterinary; agricultural

Examples

• The farmer discovered that both heifers were freemartins and would not be able to reproduce.
• Freemartins occur in about 95% of mixed-sex twin births in cattle.
• The veterinarian explained that freemartins are typically infertile due to hormonal exposure in the womb.
• Cattle breeders must identify freemartins early to avoid including them in breeding programs.
• The genetic condition that creates freemartins is well-documented in agricultural science.