Seafloor spreading and subduction are the driving forces of continental drift.   Pangaea was the Earth's only continent 4 bi â¦ llion years ago. Tectonic plates are small plates, while continent drift is several tectonic plates moving as a mass (continent).
The genetic code is the code that translates a sequence of three nucleotides (called a codon) into an aminoacid. The genetic code has those two properties: Unambiguous: Each codon is translated into one single aminoacid. Always.This means that UUA is the code leucine no matter what.Redundant: In some cases, there are more than one codons for a single aminoacid.For instance UUA means leucine, but so does UUG.est Answer: In a molecule of DNA, many sequences are repeated and therefore essential not used. These repeated sequences are known as redundant DNA. Ambiguous DNA is sections where the code is not precisely known but its known that it is one of two bases. These are represented by characters e.g.
In other words, the genetic code is said to be redundant or degenerate. This redundancy allows the protein-synthesizing machinery of the cell to get by with less, as will be seen below. The three that don't, the nonsense codons, indicate the end of the protein-coding region of an mRNA, and are termed stop codons.