Answer:
every pair in the sequence after that pair would be affected, it might result in a mutation
The effect differs. It could produce a different amino acid in the sequence because the corresponding codon has changed. It could also prevent the production of the originally intended sequence by changing one of the amino acids of a "start" codon (aka AUG) or extend the protein's sequence by modifying a "stop" codon (UAA, UAG, UGA or UGG), producing a new protein that might be useless or have different effects on the cell.
Its D.
Only because after the come into the center, they send out long string-like objects called micro-tubules which attach themselves to the chromosomes to separate them.
Mastication, or chewing, is a form of mechanical digestion that increases the surface area of foods prior to chemical digestion.