Use this information to match the list of probes to the 3 samples below: 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 somples. 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 oll the probes that will bind to a complementary sequence in that sample. These responses ore 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
Molecular Techniques
Molecular techniques are methods employed in molecular biology, genetics, biochemistry, and biophysics to manipulate and analyze nucleic acids (deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)), protein, and lipids. Techniques in molecular biology are employed to investigate the molecular basis for biological activity. These techniques are used to analyze cellular properties, structures, and chemical reactions, with a focus on how certain molecules regulate cellular reactions and growth.
DNA Fingerprinting and Gel Electrophoresis
The genetic makeup of living organisms is shown by a technique known as DNA fingerprinting. The difference is the satellite region of DNA is shown by this process. Alex Jeffreys has invented the process of DNA fingerprinting in 1985. Any biological samples such as blood, hair, saliva, semen can be used for DNA fingerprinting. DNA fingerprinting is also known as DNA profiling or molecular fingerprinting.
Molecular Markers
A known DNA sequence or gene sequence is present on a chromosome, and it is associated with a specific trait or character. It is mainly used as a genetic marker of the molecular marker. The first genetic map was done in a fruit fly, using genes as the first marker. In two categories, molecular markers are classified, classical marker and a DNA marker. A molecular marker is also known as a genetic marker.
DNA Sequencing
The most important feature of DNA (deoxyribonucleic acid) molecules are nucleotide sequences and the identification of genes and their activities. This the reason why scientists have been working to determine the sequences of pieces of DNA covered under the genomic field. The primary objective of the Human Genome Project was to determine the nucleotide sequence of the entire human nuclear genome. DNA sequencing selectively eliminates the introns leading to only exome sequencing that allows proteins coding.
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