In response to their criticisms, population geneticists Ranajit Chakraborty of the University of Texas in Dallas and Kenneth K.Kidd of Yale University in New Haven, Conn., argued that enough data are already available to show that the methods currently being used are adequate. In January 1998, however, the federal Bureau of Investigation and laboratories that conduct DNA tests announced that they would collect additional DNA samples form various ethnic groups in an attempt to resolve some of these questions. And, in April, a National Academy of Sciences called for strict standards and system of accreditation for DNA testing laboratories.
A.would have to leave their fingerprints for further investigations
B.would have to submit evidence for their innocence
C.could easily escape conviction of guilt
D.cold be convicted of guilt as well
A.the methods used for blood- cell calculation are not accurate
B.two different individuals of the same ethnic group may have the same DNA fingerprinting pattern
C.a match is by chance left with fingerprints that happen to belong to two different individuals
D.two different individuals leave two DNA samples.
A.is not so convincing as to exclude the likelihood that two DNA samples can never come from two individuals
B.is arguable because two individuals of the same ethnic group are likely to have the same DNA pattern.
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