DNA Analysis Modern Forensics-Science Used in Investigating Crimes-Relies Heavily on DNA Evidence

question 229

Multiple Choice

DNA analysis
Modern forensics-science used in investigating crimes-relies heavily on DNA evidence. Nearly every cell in our bodies contains DNA, the molecule that carries our genetic information. Aside from identical twins, no two human beings have the exact same DNA. Because DNA is present in our hair, blood, skin, and saliva, we leave traces of our DNA just about everywhere we go. Forensic investigators collect and analyze DNA evidence left at crime scenes to identify criminals.
On television, this process is quick and conclusive. In real life, however, it is much more complicated. If the material found at the crime scene is too small, too old, or has otherwise been damaged, analyzing the DNA can be difficult. Furthermore, if the sample came from teeth, hair, or bones, it must undergo a different type of analysis called mitochondrial DNA analysis, which uses DNA from a cell's mitochondria instead of the nucleus. Matching mitochondrial DNA is often more difficult than nuclear DNA.
Furthermore, forensic experts never suggest that DNA evidence is concrete proof of a suspect's guilt. Forensic science is rooted in probability, not certainty. When the DNA of a suspect is found at a crime scene, it means that the suspect was likely to have been present at the crime scene, but it does not definitively indicate that he or she was guilty of a crime.
Question: What is the author's purpose in writing this passage?

• A)To dispel some common misconceptions about DNA forensics.
• B)To analyze an important DNA forensics case study.
• C)To persuade readers that DNA forensics should be abolished.
• D)To entertain the reader with a true-crime story.

Recognize indicators of social breakdown and strain.

Comprehend the requirements for the creation of a social movement.

Identify factors contributing to the emergence and structuring of social movements.

Acknowledge the role of political opportunities, stability, and elite conflicts in protest emergence.

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Definitions:

Depreciation Expense

The orderly distribution of a tangible asset's value over the time it is expected to be used.

Tax Rate

The rate at which income or profits of a person or company are subject to taxation.

Double-Declining-Balance Depreciation

A method of accelerated depreciation that doubles the standard depreciation rate, reducing the value of assets more quickly in their early years.

Straight-Line Depreciation

A method of allocating the cost of a tangible asset over its useful life evenly.