10/10/24, 9:49 PM LS 15 PHELAN UCLA FINAL EXAM NEWEST 2024-2025 ACTUAL EXAM COMPLETE 230 QUESTIONS AND CORRECT DETAI…
LS 15 PHELAN UCLA FINAL EXAM NEWEST 2024-
2025 ACTUAL EXAM COMPLETE 230 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS)
Terms in this set (253)
one man confessed only to the second murder
alec jeffreys investigating how to test for DNA - 1985
dawn ashworth and lynda found that perpetrators of the crime were the same,
mann murders but it wasn't the guy who confessed
got voluntary blood and saliva samples
colin pitchfork
has been in use for hundreds of years
fingerprint for crime
good for property ones
identification
turn into numerical code based on these parts
why are we interested in real fingerprints not left behind in many crimes
dna fingerprinting? they are essentially unique
real fingerprints are entirely unique
solve unsolvable crimes
resolve paternity issues
dna fingerprinting uses
can prove innocence of people unjustly convicted
immigration
a long sequence of letters that carry the info of how
dna is
to build molecules for the body
, 10/10/24, 9:49 PM LS 15 PHELAN UCLA FINAL EXAM NEWEST 2024-2025 ACTUAL EXAM COMPLETE 230 QUESTIONS AND CORRECT DETAI…
how much "spelling" 99.9% of it exactly the same
difference is there different enough: 3 M diff base pairs
between individuals?
on average, indiv differ in 0.1% of their bases: 3M differences out of 3B base
their dna sequence at pairs
can isolate cells that came from perpetrators, get to
blood repeating parts, indication - random population to
compare to
repeating units, usually 4-5 nucleotides long
diff alleles may repeat different amount of times
short tandem repeats
call it a locus: location on chromosome
(STRs)
noncoding - doesn't code for any product, protein,
built, etc. "junk dna"
nucleotides A, T, C, G
supposed there are 10 1/100 (why???)
alleles for str 1, each with
the same frequency in the
population. what is the
likelihood that a random
person has the same
genotype as the
perpetrator's DNA found
at a crime scene?
has to inherit same allele, same for STRs
homozygous
10, 10 x 12, 14 not homozygous if 10 12 or 10 14
more questions about cross them like a punnett suqare still
possible STR allele
combos
for an str locus -> many (2 alleles exist within the population, but each individual
or 3 dozen or even more!) can only have two of them
many individuals have STR loci: at different pace and how many of them
different
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