DNA secondary structure is a right-handed double helix with a sugar phosphate backbone on the outside and paired bases (A-T, G-C) on the inside. Which of the following are true?相关知识点: 试题来源: 解析 The two strands are antiparallel....
Imagine that the double helix is a spiral staircase, and you’re walkingdownthe staircase. If you’re turning to the right as you descend, the DNA structure is right-handed; if turning to the left, it’s left-handed. In the image shown earlier, the DNA molecule on the right is a ri...
Z-DNA has a left-handed double helix structure with a pronounced zigzag pattern in the phosphodiester backbone. This zigzag appearance of the backbone is what immediately sets it apart from other forms of DNA. The structure consists of major and minor grooves that show little differenc...
Is DNA Really a Right-handed or a Left-handed Helix? 喜欢 0 阅读量: 2 作者: KI Tomita 摘要: The recent progress in single crystal X-ray analysis of DNA fragments involving the oligomers having alternating cytosine-guanine base sequence and novel left-handed double-stranded helical structure...
a DNA profile cannot direct an investigation because current knowledge of genotype-phenotype relation is too vague for DNA phenotyping. For example, a profile from a first time offender that has no match in any database may give the information that the criminal is a left handed male of medium...
By being negatively supercoiled, the DNA is left-handed. In other words, it is winding in a counterclockwise direction. The topoisomerase DNA gyrase is an enzyme that negatively supercoils the double helix. Answer and Explanation: Learn more about this topic: ...
True or False: A-form and B-form DNA are right-handed helices, but Z-form DNA is a left-handed helix found only in single-stranded DNA. Explain. The DNA double helix is held together by both strong and weak bonds. (a) True (b) False. True or false? In the Watson-Crick DNA d...
Z-DNA:Z-DNA is a left-handed DNA where the double helix winds to the left in a zig-zag pattern. It was discovered by Andres Wang and Alexander Rich. It is found ahead of the start site of a gene and hence, is believed to play some role in gene regulation. ...
DNA secondary structure is a right-handed double helix with a sugar phosphate backbone on the outside and paired bases (A-T, G-C) on the inside. Which of the following are true?的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业
When the two DNA strands in the double helix are anti-parallel—it means, the polarity of one strand is oriented opposite to that of the other strand. Why DNA is right handed helix? They found that at the lowest electron energies they studied, left-handed electrons preferentially destroyed ...