Nhận biết (M1)

A 2021 paper by Andrew Payne et al. introduced in situ genome sequencing (IGS), which allows simultaneous sequencing and imaging of genomes within biological samples and facilitates analysis of the relationship between a cell’s DNA and structure. Integrating IGS with expansion microscopy, which uses polymers to enlarge small structures for imaging, a team led by Jason Buenrostro later developed expansion in situ genome sequencing (ExIGS)—a technique that also allows simultaneous sequencing and imaging of genomes, but without the limitations on spatial resolution inherent to IGS.

Which choice best describes the overall structure of the text?

• A.

  It implies that an existing imaging technique for studying DNA samples has become obsolete, proposes that this technique be modified to incorporate elements of a different imaging technique, and then predicts the potential impact of the resulting hybrid technique.

• B.

  It explains the primary function of an older imaging technique, introduces a novel imaging technique that compensates for the original technique’s limitations, and then reveals that the same researchers were responsible for developing both techniques.

• C.

  It introduces an imaging technique that served as the precursor to a newer technique, describes how the older imaging technique was modified to create the newer technique, and then explains a key benefit of the newer technique.

• D.

  It describes the role of an innovative technique that is used in studying DNA samples, notes that this technique can also be used in analysis of cellular structures, and then emphasizes this technique’s superiority to conventional microscope imaging.