The definition of a point mutation states that a mutations is a point mutation if it affects only one or few nucleotides in the DNA product. We have that DNA is read in frames of 3 nucleotides. If the starting point of one frame is changed, then all frames are changed because the frames are grouped by 3 nucleotides. We have that frameshift mutations not point mutations because a shift in the reading frame affects how the rest of the DNA is read. This is the case for insertion and deletion of a nucleotide; it changes the number of nucleotides and shifts the reading frame by 1. A missense mutation is a point mutation though; it involves substituting a nucleotide with a wrong one. It involves an error only in one place and it does not change the reading frame so it affects only one nucleotide.
Newton's law of gravity helped to change the initial view that the Universe was supported by some mystical force or object.
<h3>What did Newton say held the Solar system together?</h3>
Newton's explanation that the Solar system was held together by the force of gravity helped to explain so many observation which were not explained before.
Newton's explanation that objects were attracted to one another by the force of gravity helped to change the view that the Universe was held together by some mystical or magical force or that the earth and other planets were supported on something.
Therefore, Newton's law of gravity helped to change the initial view that the Universe was supported by some mystical force or object.
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