Unknown substance Lab
The unknown substance that was found at the crime scene was, Acetylsalicyclic Acid. We know this because we did a lab with 5 possible substances which were Cocaine, Acetaminophen, Acetylsalicyclic Acid, Meth, and Ecstasy. We made sure we did everyone of the labs the same to see which one would react exactly the same, and Acetylsalicyclic Acid also known as Aspirin was the substance.
Fingerprints
A fingerprint has the basics and three basic fingerprint patterns, The basics are ridges, the core, and delta. the three basic fingerprint patterns are arches, loops, and whorl. Some other characteristics are ridge endings, bifurcations, and dots.
The fingerprints that were found at the crime scene was Alex Garcia.
The fingerprints that were found at the crime scene was Alex Garcia.
Hair and Fiber Analysis
You can use hair and fiber analysis to identify a suspect by the variety of shapes, also seeing the cuticle and medulla for fiber. For hair you can see the visible structural features cuticle and medulla. Our hair and fibers differ from species by the looking at the coronal, spinous, and imbricate. Some interesting facts I learned was that you can possibly find the ancestry, body area or origin, length artificial treatment, root type, and DNA.
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Shoeprints
The shoe print at the crime scene matched Anna Garcia's shoe, I know this because the shoe print at the crime matches actually with the bottom of Anna's shoe as you cane see in the pictures.
Blood typing (Blood Found at Scene)
The blood type that was found at the crime scene was B- blood and the the only people that has blood type B+ is Alex and Anna Garcia, so it could either one of theirs. I know this because we did blood test on all of the possible criminals, and they were the only ones with B+ blood type.
Stride Analysis
Someone could use shoe print data at a crime scene to determine the approximate height of a person, by measuring the print size, or you can see the distance between the shoe prints.
Blood Spatter Lab
The Effect of height on the diameter of blood spatter evidence at a crime scene.
Bloodstain pattern analysis give information for possible weapons that were used and to find the location of the blood source. depending on the height the blood was dropped from, the drop size would be larger or smaller. The blood stains that was found next to Anna’s body had an impact of a 90 degree angle.
- Introduction to Lab/Background Information:
Bloodstain pattern analysis give information for possible weapons that were used and to find the location of the blood source. depending on the height the blood was dropped from, the drop size would be larger or smaller. The blood stains that was found next to Anna’s body had an impact of a 90 degree angle.
- Hypothesis:
- Materials Used/Procedures:
- Pipette
- Meter stick or measuring tape
- Simulated blood
- White paper
- Paper towels
- Data Collection
- Data Analysis
- Conclusion
What is DNA? Model Building Lab
INTRODUCTION:
DNA is the building block of life. It is found in the nucleus of cells and has thousands of genes with the instructions to build different parts of the cells. DNA is what makes us who we are, it is what determines our physical characteristics and some diseases that we may develop later on in life. DNA is highly coiled and twisted into chromosomes. DNA is made up of molecules called nucleotides. Each nucleotide contains a a sugar group (deoxyribose), phosphate group (which links the sugar together) and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G)and cytosine (C). DNA can be used to solve crimes, to find a persons relative and to find babies switched at birth. "DNA can also be used to determine guilt or innocence of a suspect in a crime, and much more."
DNA is the building block of life. It is found in the nucleus of cells and has thousands of genes with the instructions to build different parts of the cells. DNA is what makes us who we are, it is what determines our physical characteristics and some diseases that we may develop later on in life. DNA is highly coiled and twisted into chromosomes. DNA is made up of molecules called nucleotides. Each nucleotide contains a a sugar group (deoxyribose), phosphate group (which links the sugar together) and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G)and cytosine (C). DNA can be used to solve crimes, to find a persons relative and to find babies switched at birth. "DNA can also be used to determine guilt or innocence of a suspect in a crime, and much more."
CONCLUSION:
The difference between the purines and the pyrimidines is that purines have two rings in their structure, while pyrimidines have just one. I think that purines bond with pyrimidines in the DNA ladder because all complementary pairs include one purine and one pyrimidine base. The two strands of DNA are complementary. That is, there are four bases and each base in one strands interacts with only one base in the other strand. For an example: So if you are given a strand with the sequence ATTCAG, you know the strand it interacts with has to be TAAGTC. When we compared our model to another group it didn't look exactly the same, this can relate to human differences, by showing us that all DNA is different, because no two people look exactly the same.
The difference between the purines and the pyrimidines is that purines have two rings in their structure, while pyrimidines have just one. I think that purines bond with pyrimidines in the DNA ladder because all complementary pairs include one purine and one pyrimidine base. The two strands of DNA are complementary. That is, there are four bases and each base in one strands interacts with only one base in the other strand. For an example: So if you are given a strand with the sequence ATTCAG, you know the strand it interacts with has to be TAAGTC. When we compared our model to another group it didn't look exactly the same, this can relate to human differences, by showing us that all DNA is different, because no two people look exactly the same.
Whose DNA is it?
DNA profiling is when the analysis of DNA from samples of body tissues or fluids in order to identify individuals. PCR is is a technology in molecular biology used to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence. Gel Electrophoresis is a laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size. In gel electrophoresis, the molecules to be separated are pushed by an electrical field through a gel that contains small pores. I would use this method to find which persons blood it was if two people have the same blood type, you could see the difference because they have different DNA.
Conclusion Answer:
The DNA that was found at the crime scene was Anna Garcia. I know this because we did a DNA gel, to see if the blood or DNA at the crime scene matched with anyone of the suspects or the victim Anna, and it came to be Anna Garcia's blood/DNA. The role that restriction enzymes and gel electrophoresis play in DNA profiling is that they help to create the gel. If the gel was placed with the DNA starting closet to the positive electrode the the bubbles wouldn't have shown.
The DNA that was found at the crime scene was Anna Garcia. I know this because we did a DNA gel, to see if the blood or DNA at the crime scene matched with anyone of the suspects or the victim Anna, and it came to be Anna Garcia's blood/DNA. The role that restriction enzymes and gel electrophoresis play in DNA profiling is that they help to create the gel. If the gel was placed with the DNA starting closet to the positive electrode the the bubbles wouldn't have shown.