tag:blogger.com,1999:blog-298867433468972984.post1277006734000008942..comments2024-03-29T00:19:02.653-07:00Comments on africa science: DNA analysis used to identify Egyptian queenUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-298867433468972984.post-61094968154319844002012-09-04T10:05:53.097-07:002012-09-04T10:05:53.097-07:00I found this excellent information that i would li...I found this excellent information that i would like to share.<br /><br />DNA was first isolated by the Swiss physician Friedrich Miescher who, in 1869, discovered a microscopic substance in the pus of discarded surgical bandages. As it resided in the nuclei of cells, he called it "nuclein". In 1878, Albrecht Kossel isolated the non-protein component of "nuclein", nucleic acid, and later isolated its five primary nucleobases. In 1919, Phoebus Levene identified the base, sugar and phosphate nucleotide unit. Levene suggested that DNA consisted of a string of nucleotide units linked together through the phosphate groups. However, Levene thought the chain was short and the bases repeated in a fixed order. In 1937 William Astbury produced the first X-ray diffraction patterns that showed that DNA had a regular structure.<br /><br />Best regards,<br />Richard F | <a href="http://www.carlmontpharmacy.com/" rel="nofollow">Carl Mont</a>Anonymoushttps://www.blogger.com/profile/12922854338263165772noreply@blogger.comtag:blogger.com,1999:blog-298867433468972984.post-78480011776926249362012-09-04T08:51:19.054-07:002012-09-04T08:51:19.054-07:00DNA consists of two long polymers of simple units ...DNA consists of two long polymers of simple units called nucleotides, with backbones made of sugars and phosphate groups joined by ester bonds. These two strands run in opposite directions to each other and are therefore anti-parallel. Attached to each sugar is one of four types of molecules called nucleobases (informally, bases). It is the sequence of these four nucleobases along the backbone that encodes information. This information is read using the genetic code, which specifies the sequence of the amino acids within proteins. The code is read by copying stretches of DNA into the related nucleic acid RNA in a process called transcription.<br /><br />Regards,<br />Michael | <a href="https://www.rx247.net/levitra.html" rel="nofollow">Levitra Online</a>Anonymoushttps://www.blogger.com/profile/07086636065191702407noreply@blogger.com