Nhận biết (M1)

Svante Pääbo and other researchers studying the history of organisms have long utilized ancient DNA—DNA recovered from ancient organic material that has been preserved under natural conditions. However, Oliveira and colleagues' 2017 study of the evolutionary trajectory of the Malagasy grass genus Chasechloa instead relied on historical DNA—genomic data incidentally preserved in specimens that are housed in natural history collections—thus capitalizing on the research potential offered by a vast but hitherto relatively underutilized source of insight into the biological past.

Which choice best describes the function of the underlined portion in the text as a whole?

• A.

  It specifies potential applications of the approach that Oliveira and colleagues used in their study.

• B.

  It offers commentary on the significance of the approach that Oliveira and colleagues used for their study.

• C.

  It emphasizes the importance of Oliveira and colleagues' findings about the DNA of flora.

• D.

  It explains why the research methodology selected by Oliveira and colleagues is not widely used.