Aresearcher is studying mutation in bacteria he found that sent back to you had changes in my dna that allowed them to be resistant to antibiotics or research is an example of

When analyzing tree rings, what do scientists assume a thin ring indicates?

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

Mrna: gcuaauguc what amino acids does the mrna above code for? what type of amino acids or function are uag, uga, and uaa coding for? which codon (3 letters) signals translation to start and also codes for the amino acid methionine (met)?