Definition of "biogenesis" [bi•o•gen•e•sis]

• The principle that living organisms develop only from other living organisms and not from nonliving matter. (noun)
• Generation of living organisms from other living organisms. (noun)
• See biosynthesis. (noun)
• The supposed recurrence of the evolutionary stages of a species during the embryonic development and differentiation of a member of that species. Also called recapitulation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• ""After these sessions a sedentary person shows an increase in mitochondrial proteins because the exercise increases mitochondrial biogenesis, that is to say, more mitochondria are produced"."
• "On the other hand, the appreciation that many miRNAs show highly selective patterns of expression underscores the importance of elucidating the mechanisms that regulate miRNA biogenesis, which is currently poorly understood."
• "Specifically, maternal diet-induced obesity in mice led to an increase in mitochondrial potential, mitochondrial DNA content and biogenesis."