#Question id: 4947
#XL - T Zoology
The first genes on Earth were probably
#Question id: 4948
#XL - S Microbiology
RNA molecules can both carry genetic information and be catalytic. This supports the proposal that
#Question id: 4948
#XL - T Zoology
RNA molecules can both carry genetic information and be catalytic. This supports the proposal that
#Question id: 4949
#XL - S Microbiology
What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?
#Question id: 4949
#XL - T Zoology
What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?
#Question id: 4951
#XL - S Microbiology
The synthesis of new DNA requires the prior existence of oligonucleotides to serve as primers. On Earth, these primers are small RNA molecules. This latter observation is evidence in support of the hypothesized existence of