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#structure and function

2 public questions tagged with this topic.

Molecular Marker

Which pair of markers are used to study both structure and function?

Functional and structural genomics require complementary marker resources for integrated analysis. Expressed Sequence Tags derived from cDNA provide evidence of actively expressed genes, enabling functional annotation, tissue-specific expression profiling and identification of conserved coding regions for comparative mapping. Variable Number Tandem Repeats and related tandem repeat families reveal chromosome architecture, heterochromatin organization, high polymorphism and linkage relationships for structural mapping. Combining VNTR for structural diversity assessment and EST for gene function investigation bridges genome architecture with gene content, supporting both structural and functional studies.

Ref: NCERT Biology Class XII Principles on Klenow fill-in labeling, Lehninger Chapter 9 DNA cloning techniques, and Molecular Cloning by Sambrook Chapter 10 documenting end-labeling of cohesive termini.

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Electrophysiological methods

Which brain imaging method is suitable for mapping structure and function simultaneously?

Combining structure and function improves diagnostic localization. Positron emission tomography reveals highly sensitive functional data such as glucose metabolism, amyloid deposition or receptor density but suffers from low spatial resolution. Computed tomography provides detailed X-ray based anatomy of skull, ventricles and calcifications. Hybrid PET-CT scanners acquire both datasets sequentially with software fusion, superimposing metabolic hotspots on anatomical maps, crucial for tumor staging, seizure focus localization and biopsy guidance. Standalone EEG provides temporal electrical info, CT alone lacks function, MRI alone lacks molecular metabolic insight.

Ref: NCERT Biology Class XII Principles on Klenow fill-in labeling, Lehninger Chapter 9 DNA cloning techniques, and Molecular Cloning by Sambrook Chapter 10 documenting end-labeling of cohesive termini.

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