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DNA evidence

Briefly explain of what DNA analysis is and how it can be used as evidence in criminal investigations.

Explain why extra caution must be exercised when collecting DNA analyzable evidence.

Discuss the precautions that must be followed to avoid contamination of evidence that may contain DNA evidence.

Describe the methods for collecting and storing DNA evidence.

Identify and discuss at least one controversial issue connected to the collection and/or use of DNA evidence

Solution Preview

DNA

Briefly explain of what DNA analysis is and how it can be used as evidence in criminal investigations.

DNA is the hereditary molecules of life. DNA contains the genetic information that can be passed down from parents to offsprings. DNA carry genetic information that dictate what we look like and who we are. Every individuals has DNA in their cells. DNA is present in the nucleus of every cells in your body. The skin, the blood, hair, tears, saliva, sweat, sperms, eggs, and all bodily fluid contain DNA. DNA is present in every genes in your body. A gene is a transcript that can expressed a particular trait like eye or hair color. It is the DNA that makes up the genes in your body.
Every individuals genetic makeup is unique in that the DNA that makes up the genes are aligned sequence by sequence differently from one individual to another. DNA makes up the sequence of genes in our bodies. For example, an individual A may have sequence AGGTTAAGGTTAA. Individual B may have a different sequence TTGGGAAAGGGTT.

By collecting DNA and sequencing it, an investigator can differentiate ...

Solution Summary

DNA is the hereditary molecules of life. DNA contains the genetic information that can be passed down from parents to offsprings. DNA carry genetic information that dictate what we look like and who we are. Every individuals has DNA in their cells.

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