Colorado Gov. Jared Polis (D) signed legislation on Tuesday banning anonymous sperm and egg donations, making the state the first in the country to prohibit the practice, the Denver Post reported Wednesday.

Why it matters: Once the law takes effect in 2025, donor-conceived adults will have the legal right to request information about their donor's identity and medical history.

The big picture: The law requires gamete banks that provide sperm and egg collection and matching to maintain up-to-date medical records and contact information for all donors.

What they're saying: The U.S. Donor Conceived Council heralded the decision, tweeting that "history was made" on Tuesday.