What Role Does Dna Play In Heredity Analysis

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A predicament has occurred, in which you speak in the defense of a young female, considered to be guilty on the basis of hair color. Knowledge of the structure of DNA and its role in heredity, how DNA and RNA work together to produce proteins, and how brown hair can result from various gene combinations , will all be an important asset in determining if the young lady is guilty or not.
To begin we must explain the structure of DNA and its role in heredity. As seen in Document A, DNA has a double stranded, double helix structure, also known as a twisted ladder. DNA controls the production of proteins and determines what traits from the parent cell are passed on to the child. Now, karyotyping is one way to prove the defendant innocent, due to the fact that karyotyping is a way to determine if it’s a boy or girl, does this child have down syndrome or not. Document C is a karyotyping of the defendant and it shows in the twenty-first base pair three chromosomes (trisomy) instead of two. All together DNA and karyotyping can play a big factor in deciding if the young lady was the one that committed the crime or not. Secondly, to determine the guilty party you must have a clear understanding of how DNA and RNA cooperate with …show more content…

A Punnett square can show the different gene combinations to produce brown hair. A Punnett square contains dominant or recessive alleles. An allele is different form of a gene, which is what determines a specific trait. A dominant allele is an allele that hides a recessive trait. A recessive allele is an allele hidden by a dominant allele. In Document E, the dominant allele is Brown hair (BB (Homozygous dominant) and Bb (Heterozygous)) and the recessive blond hair (bb (Homozygous recessive)). In Document D the dominant allele is smooth(S) and the recessive allele is wrinkled(s). As shown in the diagram below there is too many combinations that may result in brown

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