228 Answer key
7·10 Suggested answers:
Paragraph 2: Before DNA technology appeared, mainly digital ingerprints identiied criminals.
Paragraph 3: DNA technology wouldn’t exist without the work of a British geneticist and an American
biochemist.
Paragraph 4: Police employed RFLP in the late 1980s in order to solve two sexual assault and homicide cases.
Paragraph 5: Mullis discovered how to duplicate DNA in greater quantities for processing at the same time
that Jefries was carrying out his investigations.
Paragraph 6: Legal issues had to be settled before DNA was accepted as a common procedure.
Paragraph 7: In the absence of regulations, commercial laboratories put more efort into competition for
proits than providing accurate test results.
Paragraph 8: In the late 1980s, government action led to the recognition of DNA technology.
Paragraph 9: In 1992, a federally sponsored study supported the use of DNA evidence in court, and two years
later, scientists and police oicials agreed to acknowledge its legitimacy as evidence.
Paragraph 10: he recognition of DNA ingerprinting resulted in the creation of DNA databases in Great
Britain, where it had been accepted from the outset.
Paragraph 11: In the United States, 1994 legislation enabled the establishment of a national database.
Paragraph 12: In addition to convicting criminals, DNA evidence was getting innocent prisoners out
of prison.
7·11 Answers will vary.
7·12 Answers will vary.8 Eco-cities: Building sustainable urban communities
8·1 Suggested answers: communities, population, urban, home, dwellers, megacities, residents, suburban centers,
public transportation, traic, garbage, metropolitan, citizens, slums, living conditions, city management,
municipal government, municipalities, settlements, buildings, urban sprawl, public services, green areas,
parks, architects, planners, residential apartments
8·2 Consult a dictionary for denitions.- administrative, administer
- aggregate, aggregate
- communal, commune
- immigration, immigrant, immigrate
- invest
- residence, residential, reside
- secure, secure
- trendy, trend
- visible/visionary, envision
- demonstration, demonstrative
- incorporation
- achievement, achievable
- link
- concentrate
- fund/funds, fund
- phase in
- shit
- principal
- —
- —
8·3 1. phases - consists of
- funding
- concentration
- community
- infrastructure, investment
- links
- shit
- principles