By Dr Desmond S. T. Nicholl
During this 3rd version of his well known undergraduate-level textbook, Des Nicholl recognises sound seize of easy rules is key in any creation to genetic engineering. for that reason, in addition to being completely up to date, the ebook additionally keeps its specialise in the elemental rules utilized in gene manipulation. The textual content is split into 3 sections: half I offers an creation to the suitable uncomplicated molecular biology; half II, the tools used to control genes; and half III, purposes of the expertise. there's a new bankruptcy dedicated to the rising value of bioinformatics as a different self-discipline. different extra good points contain textual content bins, which spotlight vital elements of subject matters mentioned, and bankruptcy summaries, which come with goals and studying results. those, besides key notice listings, proposal maps and a word list, will let scholars to tailor their examine to fit their very own studying kinds and eventually achieve an organization grab of a subject matter that scholars frequently locate tough.
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Additional resources for An introduction to genetic engineering
At the most basic level, the type of automatic pipette and microcentrifuge tube can be important. A researcher struggling with pipettes that don’t work properly, or with tubes that have caps that are very hard to open, will soon get frustrated! At the other end of the scale, equipment such as ultracentrifuges and automated DNA sequencers may represent a major investment for the lab and need to be chosen carefully. Much of the other equipment is (relatively) small and lowcost, with researchers perhaps having a particular brand preference.
This is DNA in the commonly found B-form. 4 nm, with 10 base pairs per turn. The sugar–phosphate ‘backbones’ are antiparallel (arrowed) with respect to their 5 →3 orientations. One of the sugar–phosphate chains has been shaded for clarity. The purine–pyrimidine base pairs are formed across the axis of the helix. Major groove 2 nm The structure of RNA is similar to that of DNA; the main chemical differences are the presence of ribose instead of 2 -deoxyribose and uracil instead of thymine. RNA is also most commonly singlestranded, although short stretches of double-stranded RNA may be found in self-complementary regions.
One way of tracing the material is to label the nucleic acid with a marker of some sort, so that the material can be identiﬁed at each stage of the procedure. So what can be used as the label? 1 Types of label – radioactive or not? Radioactive tracers have been used extensively in biochemistry and molecular biology for a long time, and procedures are now well established. The most common isotopes used are tritium (3 H), carbon-14 (14 C), sulphur-35 (35 S), and phosphorus-32 (32 P). Tritium and 14 C are low-energy emitters, with 35 S being a ‘medium’-energy emitter and 32 P being a high-energy emitter.
An introduction to genetic engineering by Dr Desmond S. T. Nicholl