When does a human fetus acquire fingerprints? August 5, 2020 by Pamela Landy A human fetus develops fingerprints at the age of three months. Related Answers What causes hail? Was the child who played Little Ricky on “I Love Lucy” the son of Lucille Ball and Desi Arnaz? What three virtues does Lentulus Batiatus (Peter Ustinov) acquire at the end of Spartacus (1960)? Do identical twins have the same fingerprints? Do fingerprints have a function? When did the U.S. acquire Florida?