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Grandfather clock began to tick 2.5 billion years ago.
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- Author(s): MacKenzie, Debora
- Source:
New Scientist. 5/19/2012, Vol. 214 Issue 2865, p9-9. 1/2p.
- Additional Information
- Subject Terms:
- Abstract:
The article discusses the origin of circadian rhythms or biological clock. The author notes that how and when biological systems began keeping time is unclear, citing research by Akhilesh Reddy and colleagues that may have found a candidate for the original biological clock. Topics include the enzyme peroxiredoxin (PRX), PRX's removal of active oxygen in the body, and a gene sequence analysis of PRX.
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