beautiful structure of the DNA molecule ID: 162744377 收藏 加入清单 下载版权Palau TIFF大小 59.7MB 格式JPG 编辑图片 以图搜图 大图:4567× 4567 像素·38.67 cm × 38.67 cm·300dpi·JPG 中图:1000× 1000 像素·35.28 cm × 35.28 cm·72dpi·JPG 小图:500× 500 像素·17.64 cm × 17.64 cm·72...
beautiful structure of the DNA molecule ID: 165088040 收藏 加入清单 下载版权Palau TIFF大小 45.3MB 格式JPG 编辑图片 以图搜图 大图:4567× 3465 像素·38.67 cm × 29.34 cm·300dpi·JPG 中图:1000× 759 像素·35.28 cm × 26.78 cm·72dpi·JPG 小图:500× 379 像素·17.64 cm × 13.37 cm·72...
DNA molecule is consisting of two polynucleotide chains contains four different types of nucleotide subunit these chains of DNA is known as DNA strands. Between the nucleotide hydrogen bond holds the structure in each type of nucleotide subunit only base differs from each other.Butola...
2.6.A1Crick and Watson’s elucidation of the structure of DNA using model making. DNA分子有两条方向平行(antiparallel)的多核苷酸链组成,中间的碱基依靠氢键联系在一起,形成特殊的双螺旋结构。A与T以两个氢键结合(RNA中是A和U),G与C以三个氢键结合,这种结合方式叫碱基互补配对(complementary base pairing)(...
researcher Rosalind Franklin was using X-ray diffraction methods to understand the structure of DNA. Watson and Crick were able to piece together the puzzle of the DNA molecule on the basis of Franklin’s data because Crick had also studied X-ray diffraction (Figure 2). In 1962, James Watson...
over the full range of supercoiling degree is lacking. Atomic Force Microscopy (AFM) is a powerful tool to study DNA structure at single molecule level. We here report a comprehensive analysis by AFM of DNA plasmid molecules with defined supercoiling degree, covering the full spectrum of biologi...
1. A molecule of DNA consists of two strands that form a double helix structure. DNA is a macromolecule consisting of two strands that twist around a common axis in a shape called a double helix. The double helix looks like a twisted ladder—the rungs of the ladder are composed of ...
the combined length of all the DNA molecules in a single cell stretched end to end would be about 1.8 metres (6 feet), whereas the cell nucleus is about 6 μm (6 10-6metre) in diameter—has a highly flexible helical structure that allows themoleculeto become tightly coiled and looped....
The building block of any organism and the blueprint for life, DNA is the molecular template containing the necessary information required to synthesize important biological molecules and beings.
DNA which suggests a mechanism for its self-duplication and allows us to propose, for the first time, a detailed hypothesis on the atomic level for the self-reproduction of genetic material.We first discuss the chemical and physical-chemical data which show that DNA is a long fibrous molecule...