4. How Can Bloodstain Patterns Left At A Mysterious Death Help Investigators?
Midterm Review KEY
Unit 1:
1. What are the different parts of an experiment? a. Control group b. independent variable c. dependent variable d. all of the above
2. Match the following terms to the correct statement.
a. Independent Variable b. Control Group c. Dependent Variable
The control group is the part of the experiment where the independent variable being tested is not so that it may serve as a standard for comparison.
In an experiment it is the independent variable that is manipulated by the researcher.
The dependent variable in the experiment is the measured effect, outcome, or response.
3. How do the clues found at a scene of a mysterious death help investigators determine what might have occurred and help identify or exonerate potential suspects?
Evidence at a crime scene, such as blood, DNA, fingerprints, or shoeprints all help forensic investigators determine what might have occurred and help identify or exonerate potential suspects.
4. How can bloodstain patterns left at a crime scene be useful to investigators?
Bloodstain patterns can help investigators distinguish between an accident and foul play. If two similar-sized blood droplets fall from different heights, the resulting stains will have …show more content…
An individual’s code determines the number of times the restriction enzymes will cut and the number and size of DNA pieces that will result. These pieces can then be separated and compared using a process called gel electrophoresis. The DNA moves from the negative end to the positive end. As the fragments move, their varying lengths propel them through an agarose gel at different speeds. Short strands move through the holes in the gel more quickly than long strands and will over time move farther away from the starting point. Staining the sorted groups of DNA makes them visible to the naked eye (show up as bands in the
Unit 1:
1. What are the different parts of an experiment? a. Control group b. independent variable c. dependent variable d. all of the above
2. Match the following terms to the correct statement.
a. Independent Variable b. Control Group c. Dependent Variable
The control group is the part of the experiment where the independent variable being tested is not so that it may serve as a standard for comparison.
In an experiment it is the independent variable that is manipulated by the researcher.
The dependent variable in the experiment is the measured effect, outcome, or response.
3. How do the clues found at a scene of a mysterious death help investigators determine what might have occurred and help identify or exonerate potential suspects?
Evidence at a crime scene, such as blood, DNA, fingerprints, or shoeprints all help forensic investigators determine what might have occurred and help identify or exonerate potential suspects.
4. How can bloodstain patterns left at a crime scene be useful to investigators?
Bloodstain patterns can help investigators distinguish between an accident and foul play. If two similar-sized blood droplets fall from different heights, the resulting stains will have …show more content…
An individual’s code determines the number of times the restriction enzymes will cut and the number and size of DNA pieces that will result. These pieces can then be separated and compared using a process called gel electrophoresis. The DNA moves from the negative end to the positive end. As the fragments move, their varying lengths propel them through an agarose gel at different speeds. Short strands move through the holes in the gel more quickly than long strands and will over time move farther away from the starting point. Staining the sorted groups of DNA makes them visible to the naked eye (show up as bands in the