<em>Answer:</em>
Mutations in DNA that do not have an observable effect on the organism's phenotype.
<em>Method:</em>
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The length of a vessel is directly proportional to its resistance: the longer the veessel, the greater the resistance and the lower the flow. As with blood volume, this makes intuitive sense, since the increased surface area of the vessel will impede the flow of blood.
Answer:
The correct answer is
<h2> <u>
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Explanation:
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Answer:
According to Lamarck, organisms altered their behavior in response to environmental change. ... Their changed behavior, in turn, modified their organs, and their offspring inherited those "improved" structures.