1) A forensic scientist is required to collect blood samples from the crime scene and analyze it to help the investigators understand who participated to the murder. i) As a first step, the scientist needs to extract DNA. Indicate why red blood cells are not a good target for the analysis, and list at least two chemicals/compounds that are required to extract the DNA, explaining why they are used. ii) The sample has been collected in a small amount, so that (s)he decides to use PCR to analyze it. Describe why PCR is better suited to address small samples with respect to Southern blotting and how is selectivity addressed with this technique.

If you were a crime scene investigator, what type of fingerprint impression would you have discovered on the following objects? a) A chocolate bar. b) A bloody print on a knife. c) A plastic bag.

what does DNA tests tell us about the time frame or circumstances under which DNA came to be associated with an evidence sample?         It depends on the sample   Who was the primary wearer of an article of clothing   If the DNA was depositied as a part of the crime or from innocent contact   The order in which the individuals contributed DNA to an evidence sample

Based on the bands in the image below, which suspect was at the crime scene? Crime DNA Supeets Suspect 1 Suspect 2 Suspect 3 Suspect 1

Sara breaks her leg in a fall while snow skiing on the college ski team.  If she sues the ski lodge the lodge's most likely defense will be: a. Contributory negligence  b. Comparative negligence c. superceding cause d. assumption of the risk

I need help with the following question I dont understand a) and b)!!!!! Dr. Sharon Martin and her company have spent years working to identify  how the gene for albinism works. The mutation in this gene causes no  pigment to be produced in the hair, skin or eyes. Identifying the gene would  open the door to curing the condition. Finally, her team succeeds. But, the  years of research have been expensive. One way to make back the money  is to patent the gene that the team members have identified. Then, anyone  who wanted to develop either treatments or tests would have to pay a fee to use the gene.  a) Do you think the government should allow this gene to be patented?  Explain.                                                                                b) If Dr. Martin’s company develops a test for this gene, should they be  allowed to patent the test? Explain.

What does a guy need to do (e.g. how different does his DNA profile need to be?) to be excluded as a possible contributor to a DNA profile from an evidence sample?

Numerous red-colored fibers from a sexual assault crime scene are delivered to the crime lab along with red fibers from the suspect’s clothing. What instrument should the trace analyst use to view the fibers and obtain chemical information that could be used to compare the crime-scene and clothing samples

please help me complete this table, I have done mine, so I need correct answer to match with.

The crime investigators came up with three suspects, who had a key to Mr. Jones's home, since there was no evidence of forced entry: Suspect #1 - Mr. Smith - The plumber, who had been doing repair work in the home for the past week. Suspect #2 - Mr. Green - The son-in-law, whose wife had expressed concern to her mother recently above his gambling debts. Suspect #3 - Ms Brown - The neighbor who waters the plants and feeds the fish when Ms Jones is out of town.   Is it necessary to know the victim's blood type?Why or why not?