A mutation is a change in trait. For example people who are lactose intolerant are normal, but people that can can drink milk without a problem have mutated. Hopefully this makes sense and helped.
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Mendeleev
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You could have just looked it up.
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amino acid meet up inside the ribosome. Once translation has begun, it continues down the line as mRNA shifts along through the ribosome. ... During elongation, amino acids are continually added to the line, forming a long chain bound together by peptide bonds
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DNA Synthesis the number of chromosomes is altered so that there are either too many or too few chromosomes in the cells.
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