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Because RNA is composed of four parts of nucleotides, there are 43 = 64 possible codons, which is 64 possible triplets of nucleotides with several sequences. Furthermore, only 20 amino acids are commonly found in proteins so which, in most cases, a one amino acid is coded for through various dissimilar codons described in the figure. The genetic code is thus said to be degenerate. In reality, only methionine and tryptophan are shown by a single codon. As a conclusion of the genetic code's degeneracy, a mutation which changes only a single nucleotide in
Figure: The genetic code.
DNA point mutation, and thus changes only a single nucleotide in the corresponding mRNA, frequently has no effect on the amino acid sequence of the encoded polypeptide.
What are plankton, nekton and benthos? Plankton, nekton and benthos are the three groups into which aquatic living beings may be separated. The plankton is formed by the alg
Why in inflammatory and infectious conditions may clinical signs related to the lymphatic system occur? The lymph nodes, or lymph glands, have lymphoid tissue that makes lympho
what is respiration
Explain the Prokaryotic Cells in details? Prokaryotic Cells: Cells that lack a membrane-bound nucleus and have very few distinguishable internal structures when observed wit
Which of the following best explains what would happen if recombination (crossing-over) happens during mitotic prophase? A. Recombination during mitosis will lead to segregatio
How can the immune memory lead to the efficacy of vaccines and also produce allergies? Vaccines are controlled inoculations of fragments of infectious agents or of inactive inf
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What is the main evolutionary novelty presented by annelids? The main evolutionary novelty shown by the beings of the phylum Annelida is the coelom, the internal body cavity to
Concerning reproduction what is the function of the testicles? The testicles are the male gonads, i.e., the organs where the production of gametes takes place. In human beings
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