Individual codons code for specific amino acids. A gene is a sequence of nucleotides along a DNA strand-with 'start' and 'stop' codons and other regulatory elements-that specifies a sequence of amino acids that are linked together to form a protein.ndividual codons code for specific amino acids. A gene is a sequence of nucleotides along a DNA strand-with 'start' and 'stop' codons and other regulatory elements-that specifies a sequence of amino acids that are linked together to form a protein.
Dolomites. Italy's dramatic rocky rooftop, the Dolomites, offers some of the best mountain thrills in Europe. The bold, light-gray cliffs and spires flecked with snow, above green meadows and beneath a blue sky, offer a powerful, unique, and memorable mountain experience.olomites. Italy's dramatic rocky rooftop, the Dolomites, offers some of the best mountain thrills in Europe. The bold, light-gray cliffs and spires flecked with snow, above green meadows and beneath a blue sky, offer a powerful, unique, and memorable mountain experience.
Italy also has several active volcanoes, including Mt. Etna in eastern Sicily. Travelers to Sicily should be aware of the possibility for travel disruptions, including airport closures, and are advised to check the website of the Istituto Nazionale di Geofisica e Vulcanologia for daily updates.