1. a sugar, a phosphate, and a base (such as Adenine.)
2. Deoxyribose
3. TCGAGTC, A pairs with T and G pairs with C
4. 55 adenines, 100-45=55
All mammalian teeth share a similar structure: 1) the enamel crown, formed by epithelial cells; 2) the dentin found underlying the enamel, formed by mesenchymal cells and containing a large collagen component; 3) the pulp, the organ generating/supplying the dentin-forming cells (odontoblasts), and also containing ..
Evolution. Lamarck is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801 (Darwin's first book dealing with natural selection<span> was published in 1859): If an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring.</span>