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29 Cards in this Set
- Front
- Back
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DNA molecules are long chains of... |
Nucleotide |
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Is DNA a single long chain or more than one? If more, how many? |
More than one. Two. |
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What is the enzyme called that copies DNA? |
DNA polymerase |
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What happens to the strands of DNA when the molecule is copied and how are new necleotides added? |
Strands are separated polymerase. A new strand to each old one using the base pairing rules |
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(A)What two properties must DNA have in order to be the genetic material? |
Be replicated |
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(B)the ability to... |
Carry genetic information |
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What is the shape of a DNA molecule? |
A double helix |
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What exactly is the information that DNA carries? |
Proteins. The order of amino acids in proteins. |
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Why is that information important? |
Because proteins do almost everything in cells |
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In a coding region of DNA, every three bases of DNA codes for one1)______ of a 2)_____ |
1) Amino Acid 2)protein |
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What is PCR? How is it used? |
Polymerase chain reaction makes billions of copies of one or a few small pieces of DNA from a DNA sample |
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STR |
A short(3-6 nucleotide) Short tandem repeat |
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Why are STRs useful in identifying individuals by matching their DNA? |
Sequence repeated one after another |
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ATTACTGATTGATTGATTG |
TAATGACTAACTAACTAAC |
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What is the difference an allele and the genotype for an STR? |
Allele-8 Genotype-8,10 |
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Why does the FBI use thirteen different STRs in a DNA profile?w |
Extremely unlikely that any two people could be the same sample |
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What does CODIS stand for and what is it? |
Combined DNA index system database and search application that can match questioned DNA profile to a known profile |
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Evidence that is exchanged when two things touch may be found in small quantities is called.... |
Trace evidence |
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Footprints and fingerprints,,,, |
Patent- 2D, visible Latent- 2D, invisible w/o treatment Plastic- 3D |
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How many fingerprints have ever been found to the same? |
Zero |
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Individual ridge characters pat |
Forks, eye, island |
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Patterns |
Arch, whirl, loop. Loop-65% |
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AFIS and it’s meaning |
Automated Fingerprint Identification System. Data base of fingerprints an search functions to match known with questioned prints |
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The outer layer of a hair that has a scale-like pattern is the... |
Cuticle |
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The inner part is a hair |
Medulla |
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Function of red blood cells |
Give the body oxygen and carbon dioxide |
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What do white blood cells do? |
Fight foreign diseases |
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The fluid component of blood is called |
Plasma |
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Function of blood platelets |
Causes blood to clot and stop bleeding |
