Machinery functional markings

Simplicity argues that the genetic blueprint specifying amino acid sequences in proteins should consist of consecutive, nonoverlapping triplets. This assumption turned out to be correct, as is illustrated by the DNA sequence for a gene shown in Fig. 5-5. In addition to the codons that determine the sequence of amino acids in the protein, there are stop codons that tell the ribosomal machinery when to terminate the polypeptide chain. One methionine codon serves as an initiation codon that marks the beginning of a polypeptide sequence. One of the valine codons sometimes functions in the same way. 

Markings On/Off symbols, fuses, outlets, colors of indicators lights and buttons, other Machinery E-stop, function and controls, other ... 

The consequences for the newborn of maternal alterations in thyroid function were also investigated In brief, while mothers displayed relative hypothyroxinemia, this was not the case for the newborns who had significantly higher total T4, free T4, and TBG saturation levels than their respective mothers. Hence, in conditions with only moderate iodine restriction, newborns are protected from hypothyroxinemia. To do so, and presumably because of their low intrathyroidal iodine stores, the newborns need to stimulate at the extreme their own thyroidal machinery and this was reflected by markedly higher neonatal TSH and TG levels, compared to mothers... 

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