Yes. Oxygen crash led to Cambrian mass extinction
When scientists say they share a universal genetic code it means that all organisms it can mean either DNA as the main source of hereditary information in all life forms we know of or more likely that all organisms we know of use a three base pair code for the synthesis of proteins, DNA produces mRNA. This mRNA is read three base pairs at a time by a ribosome and this is called the genetic code.
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Sorry if I’m late but I’m pretty sure it’s B! Yes
Answer:
The entire viral particle penetrates an animal cell, while only the viral genome penetrates a bacterial cell.
Explanation:
