My favorite activity this semester was the kimchi lab, i liked this lab because it was really interesting and kind of like cooking. Even though it really smelled i was pretty interested because i have been dying to try some Korean food. Another thing is that i have always been curious about fermentation. It was really fun mixing all the ingredients and it seemed like home ed class. My least favorite activity was the karaoke project, i really don't like standing in front of the class and singing because i know my voice is horrible. Moreover my lyrics sounded really weird and confusing.Not only that my group practiced a lot but we hadn't thought of practicing together so we weren't singing in sync. The thing that i would change about this semester if i could re-do it would be reading the textbook. Throughout most of the semester i hadn't really had a chance to sit down and actually read the book and try to understand it. Another thing is i would want to change is the quizzes, if i had taken the time to really read the book then maybe most of my quiz scores would be better. In addition,(i know its more than one, so many regrets) i would like to re-do the karaoke project, improving the text and maybe singing louder (>////<) .
DNA has changed the way we investigate crimes, it has made it easier to find the culprit and solve hard cases about the cause of death or murder. Now detectives can take DNA from a suspect killer and DNA from the victim or from the person murdered. From there the detectives can test the DNA on the suspect and the DNA on the victim to see if they match. If the DNA matches then the case moves up another notch and the police is one step closer to catching the person who committed the crime. For example, if a person was murdered the detectives would try to collect as much DNA samples that could be found on the person. A piece of hair or even a piece of skin could lead to the killer, if the victim had put up a fight and scratched the murder before dying then the detectives would be able to take the skin samples from under the nails and extract the DNA from the skin sample and use it to match it with a possible suspect. DNA can be left anywhere like fingerprints, in another case a handgun was left so the police and detectives were able to collect the DNA left on the handgun and matched it to the one in the database and soon they found a match and led to the arrest. If it was an angry killer, detectives might even be able to find DNA in the victims eyes, because there might be saliva inside or on the face where some of the spit may have landed. They could easily find if the spit is of the victim or of another person by comparing it to the saliva from the victims mouth. The two main DNA test are called RFLP and PCR. Before DNA was discovered it was hard for detectives to catch a criminal because the only way was to find evidence from a set up or catching the curpit repeating the crime. Now thanks to DNA detectives have a slightly easier job. RFLP is a sequence of DNA that ends with a target and a sequence between, PCR is a DNA amplifier.
