※ 밑줄 친 부분에 들어갈 말로 가장 적절한 것은? (18～20)Spe… | [9급 서울시 영어] 24년 1회차 기출문제 상세 페이지

※ 밑줄 친 부분에 들어갈 말로 가장 적절한 것은? (18～20)
Species (or higher taxa) may go extinct for two reasons. One is “real” extinction in the sense that the lineage has died out and left no descendants. For modern species, the meaning is unambiguous, but for fossils real extinction has to be distinguished from pseudoextinction. Pseudoextinction means that the taxon appears to go extinct, but only because of an error or artifact in the evidence, and not because the underlying lineage really ceased to exist. For instance, __________. As a lineage evolves, later forms may look sufficiently different from earlier ones that a taxonomist may classify them as different species, even though there is a continuous breeding lineage. This may be because the species are classified phenetically, or it may be because the taxonomist only has a few specimens, some from early in the lineage and some from late in the lineage such that the continuous lineage is undetectable.

clues for extinction are found in many regions

a lineage may disappear temporarily from the fossil record

a continuously evolving lineage may change its taxonomic name

some divergent lineages have been fully identified