Biology notes on genetics.

View Paper
ESSAY DETAILS Words: 1214
Pages: 4
(approximately 235 words/page)

Essay Database > Science & Technology > Biology
A bacterium is a single, prokaryotic cell. It has a cell wall but lacks a nucleus and membrane - bound organelles. A bacterium's single DNA molecule is not coiled around proteins to form chromosomes. Instead, its face of the plasma membrane like a rope attached to the inner wall of a tent. First the DNA is copied, and then the cell splits. Before a bacterium can divide it must have two copies of its DNA …

showed first 75 words of 1214 total
Sign up for EssayTask and enjoy a huge collection of student essays, term papers and research papers. Improve your grade with our unique database!
showed last 75 words of 1214 total
…is identical to mitosis except that the chromosomes do not replicate before they divide at their centromeres. In anaphase II the centromeres divide, and the chromatids, now called chromosomes, move to opposite poles of the cell. Meiosis II is followed by cytokinesis, in which new membranes are formed around the four products of meiosis to create four haploid cells. Crossing-over is an efficient way to produce genetic recombination, the formation of new combinations of genes.