Forensic Science Chapter 7 Exam Questions and Answers Latest Update 2024 ( Rated A+)
Allele - Answers Definition: An alternative form of a gene
Chromosome - Answers Definition: nuclear cell structure that contains DNA in humans
Combined DNA Index System (CODIS) - Answers Definition: the FBI's co...
Allele - Answers Definition: An alternative form of a gene
Chromosome - Answers Definition: nuclear cell structure that contains DNA in humans
Combined DNA Index System (CODIS) - Answers Definition: the FBI's computerized criminal DNA
databases as well as the software used to run these databases; includes the National DNA Index System
(NDIS)
Combined DNA Index System - Answers What does CODIS stand for?
National DNA Index System - Answers Definition: is a database of DNA profiles of individuals who were
either arrested or were convicted of a serious crime
DNA fingerprinting (profile) - Answers Definition: pattern of DNA fragments obtained by analyzing a
person's unique sequences of noncoding DNA
Electrophoresis - Answers Definition: a method of separating molecules, such as DNA, according to size
Exon - Answers Definition: portion of gene that is expressed
Gene - Answers Definition: segment of DNA in a chromosome that codes for a trait and that serves in
the production of regulation of proteins
Genome - Answers Definition: all the DNA found in human cells
Intron - Answers Definition: portion of a gene that is not expressed
Karyotype - Answers Definition: picture of the paired homologous chromosomes and sex chromosomes
in a cell
Polymerase chain reaction (PCR) - Answers Definition: a method of amplifying (duplicating) minute
amounts of DNA evidence for use in investigation
Polymorphism - Answers Definition: region of repeating DNA within an intron that is highly variable from
person to person
Primer - Answers Definition: sequence of DNA added to trigger replication of a specific section of DNA
Restriction enzyme - Answers Definition: "molecular scissors"; a molecule that cuts a DNA molecule at a
specific base sequences
Restriction fragment - Answers Definition: DNA fragment that restriction enzymes create, as in
preparation for gel electrophoresis
Short tandem repeats (STR) - Answers Definition: sequence of repeating bases in noncoding regions of
DNA that are used in DNA profiling
, -can help solve crimes
-exonerate the falsely accused
-can determine whether DNA samples came from the same person or different persons, or to establish
kinship
-can help identify people through their maternal relatives (ancestry) - Answers What are 4 reasons why
DNA analysis and profiling is useful and important?
1980 - Answers DNA fingerprinting dramatically changed forensic science and the ability of law
enforcement to link perpetrators with crime scenes in the Mid-____s. What year?
1990 - Answers In the early ___s: The US military began collecting and storing blood samples of soldiers.
What year?
1994 - Answers In ___ :The Identification Act was established (what year?)
1998 - Answers In ___: The National DNA Index System (NDIS) was established
CODIS - Answers What system collects, analyzes, and communicates criminal DNA information
True - Answers True or False?
By 2014, CODIS had:
-11.1 million offenders its DNA profile
-1.9 arrestee DNA profiles
Deoxyribonucleic acid - Answers What does DNA stand for?
DNA - Answers Definition: the genetic material of all living things
red blood cells - Answers All human cells contain DNA except what kind of cells?
true - Answers true or false?
All the DNA found in human cells make up human genome
nucleotide - Answers A DNA ______ consists of a deoxyribose sugar, a phosphate group, and one of four
nitrogen bases
double helix - Answers Base pairs are located on the __ ____ of the DNA
46 - Answers the ___(#) chromosomes found in human body cells are composed of tightly coiled DNA
X and Y - Answers Most males have one __ and one __ sex chromosomes
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