1.A point mutation: A.is a result of a chromosomal deletion. B. is always silent
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1.A point mutation: A.is a result of a chromosomal deletion. B. is always silent. C.does not occur in noncoding regions of DNA. D.is a change in a single nucleotide of DNA. E. is not transmitted to daughter cells. 2.In DNA fingerprinting, A. DNA is non-specifically cut by nucleases. B. DNA is cut by nucleases into fragments of equal size. C. DNA fragments are separated by gel electrophoresis based on their charge. D. repetitive DNA sequences are often used. E. PCR is not useful. 3. Restriction enzymes A. cleave DNA at sequence-specific sites. B. are called restriction enzymes because they restrict the range of viruses that can attack a bacterial species. C. do not cut the host bacterium's DNA. D. are essential tools in molecular biology. E. All of the above 4. Restriction enzymes A. cut single-stranded DNA. B. cut double-stranded DNA at any palindromic sequence. C. cleave DNA to very small pieces. D. cleave double-stranded DNA at specific palindromic sequences. E. have been isolated from just a few species of microrganisms. 5. Gene therapy requires: A. a way to introduce new genes into the patient's cells. B. the expression of the introduced gene in vivo. C. insertion of the new gene into the host DNA. D. identification and isolation of the wild type allele. E. All of the aboveExplanation / Answer
d a c d b
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