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One of the problems with DNA testing is time and mishandling evidence. Testing can take take months to complete and completing a jury trial between the time DNA evidence is collected at a crime scene and the time is is analyzed at the lab,it can be mishandled so badly that it loses all credibility with a judge and jury. A forensic microscope which is a size of a credit card and a computer the size of a shoebox may go a long way toward solving these problems.WIth a microchip ,DNA evidence will no longer have to be collected and brought back into a crime lab. Instead, lab technicians  can bring the microchip directly to the scene of the crime .

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Alec Jeffery believed he could use fingerprinting to prove his identity of a child's father .To find out Jeffery tested the DNA on different families. For each child half the bands on the X Ray film of the DNA fingerprint belonged to the mother and half to the father. The bands on the child's DNA fingerprint that are not from the mother must be inherited from the true father.

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Kary Mullis discovered and called his new technique of DNA “PCR” which stands for Polymerase chain reaction . The key ingredient in the PCR is the enzyme , a protein that speeds up chemical reaction. The enzyme is called taq DNA polymerase which comes from bacteria found in geysers and hot springs . PCR can create unlimited copies of very small sections of DNA very quickly. Each copying cell takes only 2minutes,  the one copy of DNA from a  single cell 2 copies , 2 copies become 4 , 4 becomes 8 and, 8 becomes 16.

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There are two different kinds of fingerprints , a digital fingerprints comes from the raised ridges of skin that run in patterns of curving lines along the tips of your fingers .

The second DNA fingerprint comes from your saliva EX: Licking a envelope.

There 75 trillion cells make up in the human body.

In the human body 46 chromosomes float in a watery nucleus . The threadlike strands are made of protein and DNA molecules

The 46 chromosomes come in two sets 26-mother

26-father and they sets determine what people would look like when they get older

DNA determine our hair, eye,and skin color and height .

Dna code consists of A(adenine)-T(thymine) and G(guanine)-C(Cytosine)

All the genes .

DNA is found in almost every human cell ,including skin and blood.

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Digital fingerprint-Comes from the raised ridges of skin that run in patterns of curving lines along the tips of your fingers and thumbs

DNA fingerprint - comes from saliva

DNA- Deoxyribonucleic

Single cell- basic unit of living matter

Genes-a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

PCR(Polymerase chain reaction) -Technique used for copying DNA molecules

Geneticist-A scientist who studies genes

Polymorphic regions-The region showing the most extreme variation

PCR- polymerase chain reaction .