DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680 kb This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source. Thus, by comparing their eating habits, food sources, etc. the source of the infection can be traced to a restaurant, food item. The fingerprints are created and analysed by

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#Question id: 2294

#I Life Science/ Life Sciences Group – I-V

________ use such high magnification that even atoms are discernable.

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#Question id: 14125

#SCPH01 Biochemistry

Which of the following statement is correct about sequence alignment? 

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#Question id: 6957

#SCPH06 I Botany

The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is

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#Question id: 19135

#I Life Science/ Life Sciences Group – I-V

Which of the following statements is false when describing SWISS-PROT ? 

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#Question id: 3885

#SCPH28 | Zoology

AZT (3'-azido-2',3'-dideoxythymidine), used to treat HIV infection, acts in HIV-infected cells by: