9.Geneticists dont have to work on site.
10.Only newly excavated fossil bones using new conservation methods suggested by Geigl and her colleagues contain ancient DNA.
11.Paabo is still worried about the potential problems caused by treatments of fossils in traditional way.
Questions 12-13
Complete the following the statements by choosing letter A-D for each answer.
12.This information in paragraph 3 indicates:
[A] It is critical to follow proper practices in preserving ancient DNA.
[B] The best way of getting good DNA is to handle fossils with gloves.
[C] Fossil hunters should wear home-made hammers while digging up bones.
[D] Many palaeontologists know how one should do in treating fossils.
13.The study conducted by Geigl and her colleagues suggests:
[A] the fact that ancient DNA can not be recovered from fossil bones excavated in the past.
[B] the correlation between the amount of burying time and that of the recovered DNA.
[C] the pace at which DNA degrades.
[D] the correlation between conservation practices and degradation of DNA.
Suggested answers and explanations
1.washing,brushing,varnishing 见第一段。
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