Answer the following statement(s) true (T) or false (F)
1. Polymerase chain reaction can be used to detect disease-causing organisms that cannot be cultured and can detect the AIDS virus sooner than other tests.
2. DNA fingerprinting can be used to diagnose genetic disorders such as cystic fibrosis.
3. Alleles may be either dominant or recessive, and a recessive allele can be expressed only if no dominant allele is present.
1. True
2. True
3. True
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