Genes & Cells

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Australian bearded dragon

WHEN DRAGONS OVERHEAT  Australian bearded dragons are the first reptiles discovered to change sex in the wild due to overheating, raising questions about how they will cope with climate change.

Yersinia pestis bacteria

TINY KILLERS  Acquiring one gene and one mutation allowed these plague bacteria, Yersinia pestis (shown in yellow in a flea’s digestive system in this colored scanning electron micrograph), to cause deadly pandemics. 

skin bacteria illustration

ACNE ACCELERATOR  Vitamin B12 can lead normal skin bacteria called Propionibacterium acnes (shown in artist’s rendition) to pump out pimple-producing chemicals.

Genes & Cells

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