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A specific marker with a single peak indicates that the individual is with respect to that particular STR marker?
A single peak for a specific STR marker indicates that the individual has two identical alleles at that particular locus. This information can be used in DNA profiling for identification and genetic testing purposes.
What is the chemical used by forensic experts to identify the finger prints?
Forensic experts typically use a chemical called ninhydrin to develop latent fingerprints. Ninhydrin reacts with amino acids present in the oils and proteins of fingerprints, producing a purple or blue color that makes the prints visible for analysis.
Why is cold alcohol used in DNA extraction?
Cold alcohol is used in DNA extraction to precipitate the DNA molecules out of the solution. The cold temperature helps the DNA molecules to clump together and become visible, making it easier to separate them from the rest of the solution.
What instrument is used to load the DNA into the gel?
A micropipette or a loading dye is typically used to load DNA samples into the wells of an agarose gel.
What is the function of chloroform in DNA extraction?
Chloroform is used in DNA extraction to separate the DNA from other cellular components. It is primarily used to remove proteins by denaturing them, allowing the DNA to be purified and collected in the aqueous phase of the extraction. Chloroform is a key reagent in the organic extraction step of DNA isolation procedures.
What can't DNA profiling be used for?
DNA profiling is used by forensic experts to identify an individual. This technique is mostly used for parental testing and crime investigation.
Which part of a blood cell is used for DNA profiling?
The DNA in the nucleus, although this would need to be a white blood cell as red blood cells have no nucleus, instead using the space to store oxygen.
How do you process the gel in DNA profiling?
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What is the function of allele ladder in DNA profiling?
An allele ladder is used as a reference for determining the sizes of DNA fragments in a sample during DNA profiling. It contains known fragments of DNA of varying sizes that are used to calibrate the gel electrophoresis results, allowing for accurate comparison and identification of the sizes of DNA fragments in the sample.
What is an allele ladder and what is its function in DNA profiling?
An allele ladder is a mixture of DNA fragments of known sizes used as a reference in DNA profiling. It helps determine the size of unknown DNA fragments by comparing them to the ladder's known sizes. This allows for accurate identification of the alleles present in a sample for forensic or paternity testing purposes.
What is DNA analysis used for other than DNA profiling?
Another thing is to look for genetic damage or change in chromosome number which can lead to birth defects.
How do scientist discover that gorillas similar to humans?
DNA profiling proved that we share 98% of our DNA with primates.
What is DNA profile?
DNA profiling is a technique employed by forensic scientists to assist in the identification of individuals on the basis of their respective DNA profiles.
Why is DNA fingerprinting unreliable?
DNA fingerprinting is not as reliable as regular DNA profiling. Statistics show that about one out every 800,000 people have the same DNA fingerprint.
What is the test used to identify individuals by anazlyzing sections of DNA?
The test used to identify individuals by analyzing sections of DNA is called DNA profiling or DNA fingerprinting. This technique compares specific DNA sequences, known as genetic markers, to determine unique genetic profiles for each individual. It is commonly used in forensic investigations and paternity testing.
What emerging technology uses the principal component of chromosomes to identify suspects?
DNA profiling
When DNA profiling is carried out the second DNA sample the one not collected at the crime scene is called the?
mitochondrial sample
