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Sagot :
An analysis is finished to decide the proportions of every of the four nucleotide bases inside the DNA of several tissue samples from diverse species. the results seem in the table.
The sugar and phosphate groups make up the spine of the DNA double helix, at the identical time because the bases are placed in the middle. A chemical bond between the phosphate organization of 1 nucleotide and the sugar of a neighboring nucleotide holds the backbone collectively.
The lagging strand is synthesized in fragments. Nucleotides can not be added to the phosphate (5') cease because DNA polymerase can only add DNA nucleotides in a five' to 3' direction. The lagging strand is therefore synthesized in fragments. The fragments are then sealed together via the manner of an enzyme known as a ligase.
If three or extra nucleotides are misplaced in a gene, whole amino acids may be lacking from protein created that may have a severe sensible impact. dropping a single nucleotide is regularly not better, as a frameshift mutation can arise.
Learn more about nucleotides here:
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