Genetics

Descripción

DNA Polymorphisms and Human Identification MB ASCP
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Resumen del Recurso

Pregunta 1

Pregunta
Of the following polymorphisms which are single nucleotide differences that are seen between two genomes?
Respuesta
  • Restriction fragment length polymorphisms
  • Short tandem repeats
  • Variable number tandem repeats
  • Single nucleotide polymorphisms
  • Chromosomal translocation

Pregunta 2

Pregunta
Which of the following polymorphisms can be detected through Southern blot?
Respuesta
  • Short tandem repeats
  • Single nucleotide polymorphisms
  • Restriction fragment length polymorphisms
  • Long interspersed nucleotide sequences

Pregunta 3

Pregunta
What does it mean, that a locus is homozygous?
Respuesta
  • many different alleles
  • two alleles that are the same
  • two alleles that are different
  • no alleles
  • one allele have been deleted

Pregunta 4

Pregunta
The following is a description of which method. Patients DNA was isolated and cut with HaeIII. Product of the restriction digest was resolved by gel electrophoresis and transferred to a membrane. Then the membrane was exposed to hybridization probes, and the resulting band pattern was compared with that seen in another sample of DNA.
Respuesta
  • RFLP by Southern blotting
  • VNTR by PCR
  • SNP by sequencing
  • STR by PCR
  • SNP by Western Blot

Pregunta 5

Pregunta
FGA, D8S1179, and D2S11 are examples of which of the following?
Respuesta
  • RFLP
  • VNTR
  • STR
  • SNP

Pregunta 6

Pregunta
Which of the following is used as a marker of gender?
Respuesta
  • D8S1179
  • Amelogenin
  • TPOX
  • PentaD
  • CD4

Pregunta 7

Pregunta
How many loci are considered core loci by the Federal Bureau of Investigation in the Combined DNA Indexing System?
Respuesta
  • 10
  • 12
  • 13
  • 16
  • 20

Pregunta 8

Pregunta
When two sources of DNA are compared by STR analysis in a crime scene, how many differences between alleles will determine that the two sources are different?
Respuesta
  • 1
  • 2
  • 4
  • 6
  • 25

Pregunta 9

Pregunta
Which of the following polymorphisms can be used to compare DNA samples derived from males but not females?
Respuesta
  • STR
  • Y-STR
  • RFLP
  • VNTR
  • SNP

Pregunta 10

Pregunta
Which of the following STRs is a Y-STR?
Respuesta
  • D5S818
  • vWA
  • Penta E
  • DYS385
  • LPL

Pregunta 11

Pregunta
A child has disputed paternity. The child has the following STR haplotype: TPOX = 7/8; D5S818 = 11/12; D13S317 = 9/10; vWA = 11/12; D21S11 = 27/28. Alleged Father 1 has the following STR haplotype: TPOX = 6/10; D5S818 = 9/13; D13S317 = 9/14; vWA = 14/16; D21S11 = 30/33. What can be said of Alleged Father 1?
Respuesta
  • He is the father of the child
  • He cannot be excluded as the father
  • He is excluded as the father.
  • More STRs need to be analyzed before a conclusion can be made.

Pregunta 12

Pregunta
An individual who has two populations of cells that were derived from two different zygotes is called a:
Respuesta
  • chimera
  • mosaic
  • heteroplasmy
  • mutant

Pregunta 13

Pregunta
A woman has been raped by an unknown man. Which of the following laboratory procedures can be used to more accurately analyze residual DNA left by the man in an effort to identify him?
Respuesta
  • RFLP
  • STR
  • Y-STR
  • VNTR

Pregunta 14

Pregunta
DNA found at the scene of the crime was determined to have one peak at 212 bp at the amelogenin locus. The source of this DNA is which of the following?
Respuesta
  • Female
  • Male
  • Impossible to tell from one locus
  • This locus does not discriminate between males and females

Pregunta 15

Pregunta
STR analysis is performed on bone marrow donor-recipient pairs prior to transplantation for which of the following reasons?
Respuesta
  • To determine whether the donor and recipient are a match
  • To determine the likelihood of graft-versus-host disease
  • To find informative alleles for post-transplantation studies
  • To add their STR haplotypes to a national database

Pregunta 16

Pregunta
STR analysis was performed on a bone marrow donor and recipient pair with the following results. Which loci are informative?
Respuesta
  • vWA and TH01
  • TH01 and D13S317
  • D16S539 and F13A01
  • vWA and D13S317

Pregunta 17

Pregunta
Bone marrow has been transplanted into a recipient. STR analysis was performed on whole blood from the recipient 6 months after the transplant by PCR, followed by capillary gel electrophoresis with fluorescence measurement of amplicons. For the TPOX locus, the donor and recipient do not share alleles. The fluorescence of the TPOX locus for the donor peak was 15693, and the fluorescence of the TPOX locus for the recipient peak was 5329. What is the percentage of recipient cells remaining?
Respuesta
  • 25%
  • 34%
  • 66%
  • 75%

Pregunta 18

Pregunta
Two people have what percentage of DNA sequence that differs between them?
Respuesta
  • 1%
  • 5%
  • 10%
  • 25%
  • 15%

Pregunta 19

Pregunta
Two middle-age women who had been adopted into different families as infants discover circumstantially that they may have the same biological mother. Which of the following analyses would give the best information toward proving their maternal lineage?
Respuesta
  • Y-STR
  • Mitochondrial DNA
  • RFLP-PCR
  • SNP haplotypes

Pregunta 20

Pregunta
Consider the following STR analysis: Which of the child alleles are inherited form the father?
Respuesta
  • D3S1358: 15, vWA: 18, FGA: 24, TH01: 10 , TPOX: 11, CSF1PO: 12, D5S818: 12, D13S317: 9
  • D3S1358: 4, vWA: 5, FGA: 20, TH01: 11 , TPOX: 10, CSF1PO: 13, D5S818: 3, D13S317: 6
  • D3S1358: 15, vWA: 17, FGA: 23, TH01: 6 , TPOX: 11, CSF1PO: 12, D5S818: 10, D13S317: 10
  • D3S1358: 10, vWA: 17, FGA: 24, TH01: 6 , TPOX: 10, CSF1PO: 12, D5S818: 10, D13S317: 9
  • D3S1358: 15, vWA: 18, FGA: 24, TH01: 10 , TPOX: 11, CSF1PO: 12, D5S818: 12, D13S317: 10

Pregunta 21

Pregunta
Basked on the results which of the alleged fathers (AF) is the father?
Respuesta
  • AF1
  • AF2
  • Neither

Pregunta 22

Pregunta
A child and an alleged father (AF) share alleles with the following paternity index: What is the combined paternity index from these three loci?
Respuesta
  • 4.131
  • 4.5
  • 5
  • 3.131

Pregunta 23

Pregunta
With 50% prior odds, what is the probability of paternity from these three loci?
Respuesta
  • 80%
  • 76%
  • 90%
  • 60%

Pregunta 24

Pregunta
What is a traditional definition of a polymorphism?
Respuesta
  • The genets variation must be present in at least 1 % of the population.
  • The genets variation must be present in at least 5 % of the population.
  • The genets variation that no longer is present in the population.
  • The genets variation can not be present in majority of the population.

Pregunta 25

Pregunta
Which of the following genomic variations is the hardest to detect?
Respuesta
  • SNP
  • STRs
  • VNTRs
  • RFLPs

Pregunta 26

Pregunta
When comparing a generic similarity go two random individuals, what percentage of their genome is identical?
Respuesta
  • 99.5%
  • 95%
  • 90%
  • 100%
  • 80%

Pregunta 27

Pregunta
RFLP stands for?
Respuesta
  • Restriction fragment length polymorphism
  • Rapidly Fusing length polymorphisms
  • Rescue factor logical polymorphisms
  • Redundant fragment length polymorphism

Pregunta 28

Pregunta
Closely linked markers are used for:
Respuesta
  • Accurate mapping of regions associated with phenotypic characteristics
  • Finding the length of a sequence
  • Location of the centromere
  • Defining the promoter
  • Disabling the binding of transcription factors

Pregunta 29

Pregunta
What is a definition of a haplotype?
Respuesta
  • A block of closely linked SPS on the same chromosome that tend to be inherited together.
  • A half of a chromosome.
  • Chromosome with only one functioning allele.
  • Allele that gives a disfiguring phenotype.

Pregunta 30

Pregunta
Mitochondrial DNA is____
Respuesta
  • circular double stranded
  • circular single stranded
  • linear double stranded
  • linear single stranded

Pregunta 31

Pregunta
Genes encoded on the mtDNA include:
Respuesta
  • 22 tRNA genes, 2 ribosomal RNA genes, and 12 genes coding for components of the oxidation-phosphorylation system.
  • 30 tRNA genes, 2 ribosomal RNA genes, and 12 genes coding for components of the oxidation-phosphorylation system.
  • 22 tRNA genes, 6 ribosomal RNA genes, and 12 genes coding for components of the oxidation-phosphorylation system.
  • 22 tRNA genes, 2 ribosomal RNA genes, and 60 genes coding for components of the oxidation-phosphorylation system.

Pregunta 32

Pregunta
Mitochondrial DNA follow which type of inheritance?
Respuesta
  • Maternal
  • Paternal
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