10 BIOTECHNOLOGY Flashcards
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31
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what is DNA sequencing?
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determination of the precise order of nucleotides in a sample of DNA
32
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how is DNA synthesised?
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from 4 nucleotides, each with different nitrogenous base - adenine, cytosine, guanine, thymine
33
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why are nucleotides commonly called deoxynucleotide triphosphate
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consist of three phosphate groups joined to the sugar deoxyribose with its base
34
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what happens with DNA forms?
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- each nucleotide loses two phosphate groups
- the sugar molecule loses a hydrogen atom from the hydroxy group (OH) when it bonds to the phosphate group of an adjacent nucleotide
