Lack of strong hybridization by an allele-specific probe of about 20 bases to DNA to be tested indicates
A) a normal,unchanged sequence. B) a polymorphic sequence. C) that the probe is too short. D) that the probe is too long. E) The information given is not enough.
If a PCR amplified sample hybridizes with two allele specific probes,one normal and one mutant sequence,a carrier is identified if
A) both probes give a signal. B) neither sample gives a signal. C) only the mutant probe gives a signal. D) only the non-mutant probe gives a signal. E) None of the choices are correct.
A) only transcribed genes. B) only non-transcribed DNA. C) any DNA site that is different among genomes. D) any DNA site that is different among coding genomes. E) any DNA site that is different among non-coding genomes.