1|Page
LS 15 PHELAN UCLA FINAL EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/100% GUARANTEED TO PASS
CONCEPTS/ALREADY GRADED A+ /BRAND
NEW!!!
dawn ashworth and lynda mann murders - .....ANSWER
...✔✔ one man confessed only to the second murder
alec jeffreys investigating how to test for DNA - 1985
found that perpetrators of the crime were the same, but
it wasn't the guy who confessed
got voluntary blood and saliva samples
colin pitchfork
fingerprint for crime identification - .....ANSWER
...✔✔ has been in use for hundreds of years
good for property ones
turn into numerical code based on these parts
,2|Page
why are we interested in dna fingerprinting? -
.....ANSWER ...✔✔ real fingerprints not left behind in
many crimes
they are essentially unique
real fingerprints are - .....ANSWER ...✔✔ entirely
unique
dna fingerprinting uses - .....ANSWER ...✔✔ solve
unsolvable crimes
resolve paternity issues
can prove innocence of people unjustly convicted
immigration
dna is - .....ANSWER ...✔✔ a long sequence of letters
that carry the info of how to build molecules for the
body
A or T, G or C - .....ANSWER ...✔✔ match up
how much "spelling" difference is there between
individuals? - .....ANSWER ...✔✔ 99.9% of it exactly
the same
,3|Page
different enough: 3 M diff base pairs
on average, indiv differ in their dna sequence at -
.....ANSWER ...✔✔ 0.1% of their bases: 3M
differences out of 3B base pairs
blood - .....ANSWER ...✔✔ can isolate cells that came
from perpetrators, get to repeating parts, indication -
random population to compare to
short tandem repeats (STRs) - .....ANSWER ...✔✔
repeating units, usually 4-5 nucleotides long
diff alleles may repeat different amount of times
call it a locus: location on chromosome
noncoding - doesn't code for any product, protein, built,
etc. "junk dna"
nucleotides - .....ANSWER ...✔✔ A, T, C, G
supposed there are 10 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? -
.....ANSWER ...✔✔ 1/100 (why???)
, 4|Page
homozygous - .....ANSWER ...✔✔ has to inherit same
allele, same for STRs
10, 10 x 12, 14 not homozygous if 10 12 or 10 14
more questions about possible STR allele combos -
.....ANSWER ...✔✔ cross them like a punnett suqare
still
for an str locus -> many (2 or 3 dozen or even more!) -
.....ANSWER ...✔✔ alleles exist within the population,
but each individual can only have two of them
many individuals have different - .....ANSWER ...✔✔
STR loci: at different pace and how many of them
creating a DNA fingerprint - .....ANSWER ...✔✔ 1.
dna fragment containing each STR region is amplified.
results in huge numbers of those fragments
2. fragments separated by size, using electrophoresis
3. str region is stained on gel
LS 15 PHELAN UCLA FINAL EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/100% GUARANTEED TO PASS
CONCEPTS/ALREADY GRADED A+ /BRAND
NEW!!!
dawn ashworth and lynda mann murders - .....ANSWER
...✔✔ one man confessed only to the second murder
alec jeffreys investigating how to test for DNA - 1985
found that perpetrators of the crime were the same, but
it wasn't the guy who confessed
got voluntary blood and saliva samples
colin pitchfork
fingerprint for crime identification - .....ANSWER
...✔✔ has been in use for hundreds of years
good for property ones
turn into numerical code based on these parts
,2|Page
why are we interested in dna fingerprinting? -
.....ANSWER ...✔✔ real fingerprints not left behind in
many crimes
they are essentially unique
real fingerprints are - .....ANSWER ...✔✔ entirely
unique
dna fingerprinting uses - .....ANSWER ...✔✔ solve
unsolvable crimes
resolve paternity issues
can prove innocence of people unjustly convicted
immigration
dna is - .....ANSWER ...✔✔ a long sequence of letters
that carry the info of how to build molecules for the
body
A or T, G or C - .....ANSWER ...✔✔ match up
how much "spelling" difference is there between
individuals? - .....ANSWER ...✔✔ 99.9% of it exactly
the same
,3|Page
different enough: 3 M diff base pairs
on average, indiv differ in their dna sequence at -
.....ANSWER ...✔✔ 0.1% of their bases: 3M
differences out of 3B base pairs
blood - .....ANSWER ...✔✔ can isolate cells that came
from perpetrators, get to repeating parts, indication -
random population to compare to
short tandem repeats (STRs) - .....ANSWER ...✔✔
repeating units, usually 4-5 nucleotides long
diff alleles may repeat different amount of times
call it a locus: location on chromosome
noncoding - doesn't code for any product, protein, built,
etc. "junk dna"
nucleotides - .....ANSWER ...✔✔ A, T, C, G
supposed there are 10 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? -
.....ANSWER ...✔✔ 1/100 (why???)
, 4|Page
homozygous - .....ANSWER ...✔✔ has to inherit same
allele, same for STRs
10, 10 x 12, 14 not homozygous if 10 12 or 10 14
more questions about possible STR allele combos -
.....ANSWER ...✔✔ cross them like a punnett suqare
still
for an str locus -> many (2 or 3 dozen or even more!) -
.....ANSWER ...✔✔ alleles exist within the population,
but each individual can only have two of them
many individuals have different - .....ANSWER ...✔✔
STR loci: at different pace and how many of them
creating a DNA fingerprint - .....ANSWER ...✔✔ 1.
dna fragment containing each STR region is amplified.
results in huge numbers of those fragments
2. fragments separated by size, using electrophoresis
3. str region is stained on gel
