Download e-book for kindle: An Introduction to Genetic Engineering by Dr Desmond S. T. Nicholl

By Dr Desmond S. T. Nicholl

ISBN-10: 0511398581

ISBN-13: 9780511398582

ISBN-10: 0521615216

ISBN-13: 9780521615211

ISBN-10: 0521850061

ISBN-13: 9780521850063

During this 3rd variation of his well known undergraduate-level textbook, Des Nicholl recognises sound seize of simple ideas is essential in any creation to genetic engineering. accordingly, in addition to being completely up to date, the publication additionally keeps its specialise in the elemental ideas utilized in gene manipulation. The textual content is split into 3 sections: half I offers an advent to the proper easy molecular biology; half II, the equipment used to control genes; and half III, purposes of the expertise. there's a new bankruptcy dedicated to the rising significance of bioinformatics as a special self-discipline. different extra gains comprise textual content packing containers, which spotlight very important points of issues mentioned, and bankruptcy summaries, which come with goals and studying results. those, besides key observe listings, inspiration maps and a thesaurus, will allow scholars to tailor their examine to fit their very own studying types and finally achieve an organization clutch of an issue that scholars usually locate tricky.

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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. There are three main types of RNA molecule found in cells: messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA). Ribosomal RNA is the most abundant class of RNA molecule, making up some 85% of total cellular RNA.

Cells may be highly specialised and differentiated, and their external environment is usually stable and controlled by homeostatic mechanisms to ensure that no wide fluctuations occur. Thus, cell specialisation brings more complex Prokaryotic genes are often regulated in response to external signals such as nutrient availability. Eukaryotic genes are often regulated in response to signals generated from within the organism. 16:16 25 P1: SBT 9780521850063c02 26 CUUS128/Nicholl 978 0 521 85006 3 March 11, 2008 THE BASIS OF GENETIC ENGINEERING (a) 5'-A T G G C T A C C A A G G T A G C T A T T 3'-T A C C G A T G G T T C C A T C G A T A A CC UA GC G mRNA '-A U A G AG G UA CU AU U RNA polymerase 5 NH2 (b) (c) Met Ala Thr E P Lyss Ly A LSU Vall Va G UG UUC CAU 5'-AUGGCUACCAAGGUAGCUAUU-3' SSU Fig.

However, this is a little too simplistic, and I prefer to use the analogy of a recipe to describe how genes and proteins work. Let’s consider making a cake -- the recipe (gene) would be found in a particular book (chromosome), on a particular page (locus), and would contain information in the form of words (codons). One part of the recipe might read ‘add 400 g of sugar and beat well’, which is fairly clear and unambiguous. When put together with all the other ingredients and baked, the result is a cake in which you cannot see the sugar as an identifiable component.

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An Introduction to Genetic Engineering by Dr Desmond S. T. Nicholl

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