Question

Biologists analyzing ancient DNA from fossils found in Siberia utilized a new, high-throughput sequencing technique to identify a previously unknown human ancestor, the Denisovans. By comparing this genetic data with that of modern humans, they discovered that early humans interbred with this group, reshaping our understanding of human evolution.
Which choice best describes the overall structure of the text?
A) It discusses a new scientific method, then details the limitations of that method.
B) It describes a research breakthrough, then explains its significance in the field.
C) It outlines a specific experiment, then presents a new theory that contradicts the results.
D) It compares two different scientific approaches, then argues for the accuracy of one over the other.

Answer 1

B) It describes a research breakthrough, then explains its significance in the field.