Foot board measure is basically a calculation of how many boards of a particular size that it takes to build a 12-by-12-inch square block, which means that length takes on a more significant role in the calculation of bundle than width and thickness.
The shape of adenine is complementary to either thymine in DNA or uracil in RNA. Cytosine (C). Cytosine (C) is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2). The nucleoside of cytosine is cytidine.
RNA and DNA are similar in structure, made up of four nucleobases, a phosphate group, and a deoxyribose sugar. They form a double helix base. Both share the bases Guanine, Adenine, and Cytosine. The fourth for DNA and RNA respectively are Thymine and Uracil.