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.
The flag was adopted in 1916 by the Easter Rising rebels and subsequently by the Irish Republic during the Irish War of Independence (1919â1921). Its use was continued by the Irish Free State (1922â1937) and it was later given constitutional status under the 1937 Constitution of Ireland.he national flag is the tricolour of green, white and orange. The government in Ireland have taken over the so called Free State Flag in order to forestall its use by republican element and avoid legislative regulation, to leave them free to adopt a more suitable emblem later.