#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
#Question id: 4951
#XL - T Zoology
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
#Question id: 4952
#XL - S Microbiology
Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth. Which of these questions is currently the most problematic and would have the greatest impact on our understanding if we were able to answer it?
#Question id: 4952
#XL - T Zoology
Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth. Which of these questions is currently the most problematic and would have the greatest impact on our understanding if we were able to answer it?