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FSC100 Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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FSC100 Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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FSC100 Exam | Questions And Answers Latest {2024- 2025} A+ Graded | 100% VerifiedDNA can be used to discriminate between identical twins - false
forensic biology consists of - body fluid identification and dna analysis
serology - body fluid identification
Rosalind Franklin - Woman who generated x-ray images of DNA, she povided Watson and Crick with key
data about DNA
Sir Alec Jeffreys - 1984- first person to make a breakthrough in DNA exclusion/dna fingerprinting
first dna case? - collin pitchfork convicted
-- through sir alec jeffreys contributions
humans inherit ____ chromosomes from each parent for a total of ________ - 23 chromosomes from
each parent
total of 46
restriction fragment length polymorphisms (rflp's) were discovered by - sir alec jefferys
dna can be extracted from any fluid that has a cell with - a nucleus
prescence of spermatoza - indicates sperm
dna profiling - second gen tying system (currently used)
- looks at a single locus on a chromosome
, dna typing - the variety of methods that isolate and extract sections of dna
dna fingerprinting - first-generation typing system
- using rflp's
short tandem repeats (STRS) - - 2 to 5 base pair repeats
popular and current method of dna typing in forensic science
advatages of str analysis - - does not require large quantities of DNA
and the sample can be degraded
- less-time consuming with a high degree of discrimination
short tandem repeat analysis is combined with another technique...
what does this technique do? - polymerase chain reaction
-- allows for amplification, or for the unlimited copying of dna from a small sample
RFLPS are - DNA restriction fragments (sections cut out with enzymes)
the first case in which dna eliminated a suspect - 1984 - sir alec jeffreys
dna fingerprinting is what kind of system? - multi-locus
- also time consuming
dna can be extracted from ... - sperm, hair with roots, organs, teeth, skin, sweat
epigenomic variations - changes triggered during embryological development, the reason why identical
twins do not have exactly the same dna
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