11.09.2008

The secrets of DNA

When the gene and found that the correlation between the DNA, people still want to know how the DNA is a kind of thing, it is no concrete way of life to so many messages to the new successor of it?
First of all, people want to know what DNA is composed of human love is always asked at the end of this plane. The results have called the Levin scientists through research, found that DNA from four of the smaller things, the four things named nucleotide of the total, as the four brothers, all of which nucleotide surname, But the name is different, namely, adenine (A), guanine (G), cytosine (C) and thymine (T), it is difficult to remember the names of the four, but keep in mind that as long as the DNA from four Nucleotide just get together and connect them to each other's no law, but in fact not the same nucleotide, and their combination with each other's ever-changing ways, a great mystery.
Now, people basically have to understand the genetic How did it happen. The 20th century, the study found that biology: the body is posed by the cell, the cell membrane, such as the composition of the nucleus and cytoplasm. Known in the nucleus of a material called chromosomes, which is called by some of the DNA (DNA) of the composition of the material.
Biological genetic material present in all cells, the substance called nucleic acid. Nucleic acid from the nucleotide polymerization. And each of the nucleotide phosphate, ribose and constitutes a base. There are five bases, respectively, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U). Each contains only five nucleotide base pairs in a.
The single nucleotide even as a chain, the two nucleotide chains according to a certain degree of order, and then twisted into a "cannabis"-like, it constitutes a DNA (DNA) of the molecular structure. In this structure, each of the three bases to the genetic composition of a "password" and a DNA base pairs on as many as several million, so each of the DNA is a much of the genetic code, which the possession of genetic information A countless number of such molecules on the DNA present in the chromosomes in the nucleus. As they passed cell division genetic code.
Human genetic trait passed by the password. There were about 25,000 genes, each gene is determined by the password. Human gene in both parts of the same, but different. A different part of the decision of the distinction between human beings, that is, the diversity of people. A total of DNA's genetic code 3,000,000,000, the composition of the order of about 25,000 genes.