Category:20th century in biology Biology portal15th16th17th18th19th20th21st22nd23rd24th25th Subcategories This category has the following 14 subcategories, out of 14 total. 20th century in biotechnology (9 C)0–9 20th-century biologists (47 C, 49 P) 1900s in biology (11 C) 1910s in biology (12 C) 1920s in biology (12 C, 1 P) 1930s in biology (12 C) 1940s in biology (12 C) 1950s in biology (12 C) 1960s in biology (12 C, 1 P) 1970s in biology (12 C) 1980s in biology (12 C) 1990s in biology (12 C, 1 P)M 20th century in medicine (13 C)T Taxa described in the 20th century (102 C)
