The number has a decimal representation that terminates (after 9 digits). If it terminates, the number is rational.
termanating decimals
Kodam
It is rational because it terminates.
An irrational number. eg Pi (3.141592.......)
It is a triplet of bases (codon) coding for the amino acid tyrosine
The three coding letters on mRNA are known as a codon. They code for a specific amino acid to be added to the protein chain being created.
The coding region of a gene is that portion of a gene's DNA or RNA, composed of exons, that codes for protein. The coding region of an organism is the sum total of the organism's genome.
A deletion is a serious mutation. This would cause a shift in the reading frame and every triplet after that one, including that one, would not be one nucleotide off. This would most likely cause every amino acid to change (although they could stay the same because there are multiple codings for each amino acid). Depending on where this was in the DNA chain it can cause a small loss of function or a total loss of function of that particular protein.
Anticodon?
The promoter region, typically located upstream of the coding sequence, serves as the recognition site for RNA polymerase. It contains specific DNA sequences that allow RNA polymerase to bind and initiate transcription.
If the mutant codon still codes for the same amino acid (a silent mutation). For example: GUU, GUC, GUA and GUG all code for the amino acid Valine. So if the mutation changed the codon from GUU to GUA - Valine would still be produced and therefore the polypeptide will be identical.
Codon is found on the messenger RNA(m RNA).During translation, the codons on the m RNA are read by the ribosome and amino acid corresponding to the codon is added. when ribosome encounters a stop codon (UAG,UGA and UAA) translation terminates.
Coding region and noncoding region
If the mutation is in a coding region of a chromosome, then you may have one of several errors. The most likely would be a frameshift error or a substitution error. With a frameshift error, a base (or bases in groups which are not divisible by 3) is inserted, which then shifts the reading frame for your codons. In many cases this may accidentally generate a new start codon, get rid of your stop codon, or at the very least mess up the amino acids in your chain. If you instead have a simple substitution ( such as A switched in for C) it will depend on what the codon specifies. If you have altered a start or stop codon such that it no longer performs this function, your protein will either never even start coding, or not stop coding until long past its appropriate chain length. If you have altered an amino acid in the middle of the chain, it will depend on what the codon specified. If you convert from one hydrophobic amino acid to another similar amino acid you will have minimal changes. If however you go from a nonpolar amino acid to a polar hydrophilic amino acid, you protein folding will be entirely altered, which will change its functionality, and potentially render it useless.
The region of DNA where RNA synthesis begins is the promoter. DNA contains a number of upstream regulatory and promoter sequences but the region of DNA where RNA synthesis begins is the start codon. This is the first codon that translates into an RNA nucleotide.
The region of chromosome that is generally thought of as the unit of function is the "gene". Genes are composed of both a "coding region"--that sequence that tells the cell's machinery what the protein will be--and a "regulatory" region, which tells the cell when to turn on the coding region to make the protein.