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Blue prints of body design are stored in the DNA. Why?
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- . Lane 1 represents DNA taken from the murdered victim. Lane 2 through 5 are DNA samples taken from suspects in the crime. Lane 6 is from a bloodstain found near the victim. Q6. Why is it important to include the DNA taken from the murdered victim (Lane 1) in this DNA analysis?Define junk DNA.Interesting knowledge about DNA.
- DNA figureThe following gel shows the results of a crime scene investigation. Lane 1 shows a DNA sample that was obtained from the scene of a crime (there was evidence of the criminal cutting himself, so it's the criminal's blood sample that produced the DNA bands in lane 1). Lanes 2-7 shows a DNA sample from six potential suspects held in connection with the crime. Arrange the bands labeled A, B, C, D from largest to smallest. 1 2 3 4 5 6 7 OC, A, D, B A, B, C, D OB, D, A, C O D, A, C, BBecause strawberries have 8 sets of chromosomes, they yield a lot more DNA compared to that of cheek cells. But, DNA looks the same whether it is extracted from plants or animals. Please describe the appearance of the DNA.
- What is it about the structure of DNA that allows it to be replicated so exactly, thus making it so successful as the genetic material? Be specific and complete in your answer.DNA, the carrier of genetic information in living things, has been used in criminal justice for decades. But how, exactly, does DNA profiling work? Given a sequence of DNA, how can forensic investigators identify to whom it belongs? Well, DNA is really just a sequence of molecules called nucleotides, arranged into a particular shape (a double helix). Each nucleotide of DNA contains one of four different bases: adenine (A), cytosine (C), guanine (G), or thymine (T). Every human cell has billions of these nucleotides arranged in sequence. Some portions of this sequence (i.e. genome) are the same, or at least very similar, across almost all humans, but other portions of the sequence have a higher genetic diversity and thus vary more across the population. One place where DNA tends to have high genetic diversity is in Short Tandem Repeats (STRs). An STR is a short sequence of DNA bases that tends to be repeated back-to-back numerous times at specific locations in DNA. The number of times…DNA replication is called semi-conservative because ___ (all, all or none) of the two new strands of DNA is old DNA from the original DNA molecule and ___ (all, all or none) is new DNA.
- A person cannot see a single cotton thread 100 feet away, but if you wound thousands of threads together into a rope, it would be visible much further away. Is this statement analogous to our DNA extraction? Explain.Many times a forensic scientist has only a single hair or a single drop of blood for analysis. The amount of DNA in this kind of material is very tiny, and is not enough to use for comparison. In other words, running a single experiment to compare the DNA in a drop of blood with several suspects would use up all of the DNA in that drop of blood. This could be a serious problem if none of the suspects provided a match. How would a forensic scientist increase the amount of DNA available to them, starting with the DNA that would be found in their crime scene sample, such as a drop of blood from a suspect? PCR RFLPS Gel electrophoresis STRSIn general, which part of a DNA sequence will have the best quality? (Ex. Beginning, middle, end?) Why?