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Dna Fingerprinting Research Paper

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Introduction
In Science, we have been studying DNA. At the beginning of the investigation, we knew DNA is a double helix shape found in the nucleus of eukaryotic cells. It codes in your body and determines what you look like and what you do. DNA makes up things called chromosomes (you have 46 in your body). Genes determine your traits and they are a certain piece on your chromosomes. The guiding question was, “Which male(s) sired Domino, Merlin, and Sugar?” The goal of this investigation was to understand how DNA fingerprinting works and how DNA is passed down from parent to offspring.
Method
In order to answer the guiding question, a procedure needed to be followed. DNA fingerprinting is how forensic scientists figure who the criminal was …show more content…

I know Roy sired Merlin and Domino because Roy and Merlin share 50% of their DNA and the same with Roy and Domino and Sugar and King. The figure below shows that the data supports this claim because if the two of the bands below match between the younger and possible dad that means that that means they are the father. We known that Bella is the mother because she shares bands with all three of the puppies. The letters in the chart below represent certain bands. The bands that are near the mother and father are the bands that they share with the puppy. I can tell who is the father because he shares half of his bands with the younger dog. 50% of the bands must be shared because in sexual reproduction there are two parents so the offspring will have half its DNA from each parent. This is related to DNA because the bands that we see are STRs which are a part of DNA. Sexual reproduction is related to the evidence because the parents share 50% of the DNA and in the chart below the parent and offspring share 50% of the DNA. Dogs inherit 39 chromosome from each parent making a common 78 chromosome so each young dog should share 50% of its DNA with its parent. Another real world example of this is in crime scenes forensic scientists use DNA fingerprinting to match the culprit with the suspects by comparing the

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