One of the 4 nucleic acid bases. They connect the two strands of the DNA double strand by means of hydrogen bonds, the principle of so-called complementarity of bases. derived from pyrimidine. It is part of nucleic acids, where it forms a complementary pair with guanine using three hydrogen bonds.
Due to the large number of fossils being discovered at that time Darwin proposed that species change over long periods of time.
Explanation:
The theory of Darwin was that the species change in accordance to their environment, thus they develop advantageous traits so that they can be more competitive.
