You will prepare and submit a term paper on Forensic Science. Your paper should be a minimum of 1500 words in length. Projected bloodstain includes spatters, splashes, cast-off stains, and arterial spurts and indicates that force, greater than gravity, was used on a blood source (Murray 2005).
One high profile case where BPA had helped in its resolution was the 1984 case of Graham Backhouse in England. A man named Bedale-Taylor lay dead shot by Backhouse’s shotgun. Backhouse claimed that Taylor entered unauthorized into his home and tried to kill him with a knife and so he was forced to shoot him. Backhouse himself sustained injuries on the chest and face. However, BPA analysis determined that the victim’s hands were covered with blood but not the knife, which did not sustain Backhouse’s claim that the victim attacked before he shot the victim. The blood splatters on the floor were round splashes which did not indicate that a struggle occurred because their shapes would have been exclamation-mark shapes. In addition, some of the furniture that got knocked down landed on top of blood splatters, and a blood smear was found on top of a fallen chair from Backhouse’s hand, yet there was no blood on the gun (Ramsland 2010).
Q4 The Hardy-Weinberg Law is a formula that makes possible the measurement of the numbers of genotypes and alleles in a population without having that population undergo DNA testing. This law states that both allele and genotype are in a constant equilibrium unless influences are introduced into the population that disturbs it and the Hardy-Weinberg formula to determine the likelihood that a suspect would share the sample DNA taken from the crime scene (Hunter 2006). On the other hand, the Product Rule is a formula for calculating the probability that a match between a DNA sample taken from the crime scene and of the suspect would occur only by chance. When a match between two samples are made, the math may either indicate that the suspect is guilty or that the DNA match was mere coincidence, in which case both the Hardy-Weinberg equilibrium and the Product Rule are used to calculate the weight of the match or the chance (Brenner 2010).
Q5 Real-time PCR (RT-PCR), also known as Q-PCR (for quantitative) is a laboratory tool in DNA testing that allows the simultaneous detection and quantification of specific sequences in a DNA sample. Its value in the forensic laboratory is that it males DNA testing faster and more precise.