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You have isolated several DNA sequences from a variety of mouse tissues

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You have isolated several DNA sequences from a variety of mouse tissues. You have labeled each one of them with a radioisotope and will use them as probes on blots of several DNA and RNA samples.

Below are a list of all the probes you generated (probes A through E) and a list of all the DNA and RNA samples that you will analyze (Samples 1 through 3)

Beside each sample, write the letters corresponding to all the probes that will bind to a complementary sequence in that sample. These responses are graded all or nothing!

List of probes
Probe A: promoter sequence of a gene that is only expressed in the nervous system
Probe B: promoter sequence of one of the genes encoding a ubiquitously expressed histone protein
Probe C: coding sequence of a gene that is only expressed in the nervous system
Probe D: coding sequence of one of the genes encoding a ubiquitously expressed histone protein
Probe E: intron of a gene that is only expressed in the nervous system

List of samples
Sample 1: Southern blot of genomic DNA extracted from adult mouse cardiac muscle system cells


Sample 2: Northern blot of mRNA extracted from adult mouse nervous system cells


Sample 3: Northern blot of mRNA extracted from adult mouse cardiac muscle cells