574 - [Unassigned] 465
575 - Specific parts of & systems in plants 127
576 - Genetics & evolution 113
577 - Ecology 67
572 - Biochemistry 40
570 - Life sciences; biology 19
571 - Physiology & related subjects 17
578 - Natural history of organisms 10
573 - Specific physiological systems in animals 6
579 - Microorganisms, fungi & algae 3