Pedigree Assignment Essay

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Pedigree Assignment Right-handedness is a much desired trait by most people. The reason being is that a lot of things are easily accessed by right-handed people such as desks, scissors, shifting gears in a car, etc.… Thankfully, I am right handed and do not have to deal with the minor challenges of a left-handed person. This assignment focuses on the inheritance patterns in my family mainly from my mother’s side of the family. Right-handedness is a dominant trait in my family. Pedigree analysis can determine inheritance patterns for human traits. It shows the different generations and the traits that they carry. The trait being studied in this pedigree chart is handedness. Right- handedness is dominant and left-handedness is recessive. Left-handedness is being traced throughout the generations of my family. It is an autosomal recessive trait because it skips generations and the affected individuals have parents that are not affected. Right-handedness in my family is autosomal dominant because all of the parents that were right handed had at least ¾ children with the trait and it does not skip any generations. Generation I and generation II, child 4 and 8, are a great example of the autosomal recessive inheritance because the parents are not affected but two of nine children are. Generation II, child 9 and their mate (10) produced no left-handed children. This confirms that the trait skipped a generation. In generation III, child 2 and their mate (1), produced ¼ of left handed children. This shows that the parents are heterozygous for the trait because ¾ are right-handed and ¼ is left-handed. In conclusion, I learned how to create and understand a pedigree chart when focusing on a specified trait. Dominant traits are a good thing when dealing with positive characteristics. Although left-handedness is not a bad trait, left-handed people have to struggle with

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