DNA = thymine, Guanine , adenine and cytosine .
RNA = thymine ,uracil,guanine ,cytosine
Chromatids would not be fully developed
The united states banned the use of ddt because it was running from the farmers fields into rivers and the fish were absorbing the chemicals. Eagles and other birds would eat fish out of the rivers and because they were infected with the chemicals, the bird also was infected. When the birds would lay their eggs the shell would be really thin and they would sit on the eggs to warm them and the shell would break. This is the reason why the Bald Eagle became endangered.
The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells. The nuclei resulting from a mitotic division are genetically identical to the original nucleus. They have the same number of sets of chromosomes, one set in the case of haploid cells and two sets in the case of diploid cells. In most plants and all animal species, it is typically diploid cells that undergo mitosis to form new diploid cells. In contrast, meiosis consists of two nuclear divisions resulting in four nuclei that are usually partitioned into four new haploid daughter cells. The nuclei resulting from meiosis are not genetically identical and they contain one chromosome set only. This is half the number of chromosome sets in the original cell, which is diploid.