Purines and pyrimidines are two of the building blocks of nucleic acids. Only two purines and three pyrimidines occur widely in nucleic acids. Here are their structures in organic chemists' line notation: The Purines Adenine Guanine The Pyrimidines Cytosine Thymine Uracil.urines and pyrimidines are two of the building blocks of nucleic acids. Only two purines and three pyrimidines occur widely in nucleic acids. Here are their structures in organic chemists' line notation: The Purines Adenine Guanine The Pyrimidines Cytosine Thymine Uracil.
The Irish flag was introduced by Thomas Francis Meagher in 1848. The green represents the Irish people, most of whom most are Catholic. The orange color represents the British supporters of William of Orange who settled in Northern Ireland in the 17th century most of whom are Protestant.The white in the center represents the peace between the two groups.he green represents the Irish people, most of whom most are Catholic. The orange color represents the British supporters of William of Orange who settled in Northern Ireland in the 17th century most of whom are Protestant. The white in the center represents the peace between the two groups.
St. Patrick's Cross, the flag of Ireland. The cross represented in each flag is named after the patron saint of each country: St. George, patron saint of England, St. Andrew, patron saint of Scotland and St. Patrick, patron saint of Ireland.The image below renders the idea of the union of the three flags forming one unified, transnational Flag.hus we have the first flag of the union called, in fact, the Union Flag. What was meant to be a symbol of unity actually became a symbol of international controversy. The English resented the fact that the white background of their cross had disappeared and that the new flag had the blue Scottish background.