Answers for “Population movement and genetics” with Explanations

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Question 14-19:-
14. iv (para A, line 5-7: “footing. The best information on early population movements is
now being obtained from the „archaeology of the living body‟, the clues to be found in
genetic material”)

15. vii (para B, line 1-2: “Recent work on the problem of when first people entered the
Americas is on example of the value of these new techniques”)

16. X (para C, line 4-10: “of human blood. All proteins „drift‟, or produce variants, over the
generations, and members of an interbreeding human population will shore a set of such
variants. Thus, by comparing the Gm allotypes of two different populations (e.g two
Indians tribes), one can establish their genetic „distance‟, which itself can be carlibrated
to give on indication of the length of time since these populations lost interbred.”)

17. i (para D, line 3-4: “year period. They found that their Gm allotypes could be divided into
two groups, one of which also corresponded to the genetic”)

18. vi (para E, line 7-8: “Robert Williams‟s work, all three groups appear to be descended
from the some ancestral (Paleo-Indian) population.”)

19. ii (para F, line 1-3: “there are two other kinds of research that have thrown some light in
the origins of the Native American population; they involve the study of teeth and of
languages”)

Question 20-21:
20. E (para D, line 9-10: “The first, Paleo-Indian, wave more than 15,000 years ago was
ancestral to all Central and South American Indians

21. D (para D, line 12-13: “ancestors of the Navajo and Apache (who only migrated South
from Canada about 600-700 years ago”)

Question 22-26:-
22. C (para D, line 14-15: “ The third wave, perhaps 10,000 or 9,000 years ago, saw the
migration from Northeast Asia of groups ancestral to the modern Eskimo and Aleut.”)

23. B (para D, line 11-13: “The second wave , about 14,000 – 12,000 years ago brought NaDene hunters, ancestors of the Navajo and Apache (who only migrated South from
Canada about 600-700 years ago”)

24. A (para E, line 4: “groups: PimaPapago Indians in Arizona”
line 7-8: “Robert Williams‟s work, all three groups appear to be descended
from the some ancestral (Paleo-Indian) population”)

25. A (para E, line 5: “Yucatán peninsula, Mexico, and Ticuma Indians in the Upper
Amazon region of Brazil”) line 7-8: “Robert Williams‟s work, all three groups appear
to be descended from the some ancestral (Paleo-Indian) population”)

26. A (para F, line 8-10: “. Studies carried out by Turner of many thousands of New and Old
World specimens, both ancient and modern, suggest that the majority of prehistoric
Americans are linked to Northern Asian”)

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