1. Evaluate the statement that "exceptions" exist to the Universal Genetic Code. Examine possible significance of such "exceptions" and present models consistent with available data to explain possible origins for such exceptions. In other words, provide a possible step-by-step set of conditions to explain ho at least one example exception might have occurred, including selective pressures leading to the change(s).
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
1. Evaluate the statement that "exceptions" exist to the Universal Genetic Code. Examine
possible significance of such "exceptions" and present models consistent with available data to
explain possible origins for such exceptions. In other words, provide a possible step-by-step set
of conditions to explain ho at least one example exception might have occurred, including
selective pressures leading to the change(s).
In every organism information is stored in DNA.The relationship between the sequence of amino acidsin a polypeptide and nucleotide sequence of DNA or mRNA is called genetic code.The genetic code is applicable universally,One codon specifies only one amino acid and not any other.As we know that there are 20 amino acids and 63 triplet codons.Only tryptophan and methionine are specified by single codons.
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