The first was that all organisms have descended with modification from common ancestors.
The second was that the major agent of modification is natural selection acting on variation between individuals.
<span>A biochemist modified a protein so the amino acid lysine occurred where the amino acid aspartic acid previously occurred. this change could ...
</span>alter the protein's tertiary structure. Hope this Helps
<span>B. They have continued to improve and are still used today.
The course of the Second World War gave rise to the technological advancements that are still being used today but now being improved.
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Look out side in the morning you see fog that is a chemical reaction
