Recent posts about Madison Heights, Michigan on our local forum with over 2,000,000 registered users. Madison Heights is mentioned 530 times on our forum: Latest news from Madison Heights, MI collected exclusively by city-data.com from local newspapers, TV, and radio stations.
DNA is in an incredible structure. This tightly coiled molecule houses the genes that an organism needs to grow and survive, and packing them all inside a cell's nucleus is an incredible feat. slide 1 of 2. The DNA length varies in different organisms. The DNA of a virus may be as small as a few thousand base pairs. However, the DNA of E. coli, a bacterium has 4 million base pairs and the human genome contains 6 billion base pairs. In general, the more complex the organism, the greater the DNA content in its cells.
The DNA helix consists of two complementary DNA strands. Therefore, each of the two strands serves as a template for the construction of the other strand. Under normal conditions the DNA is packed into a compact structure called chromatin.To be able to replicate, the cell has to unfold and unwind the DNA, and also has to separate the two strands from each other.The cell has a complex machinery to perform these tasks. When it is time to replicate, special initiator proteins attach to the DNA at regions called replication origins.nder normal conditions the DNA is packed into a compact structure called chromatin. To be able to replicate, the cell has to unfold and unwind the DNA, and also has to separate the two strands from each other. The cell has a complex machinery to perform these tasks.