FSC100 Exam review QUESTIONS WITH ANSWERS

FSC100 Exam review QUESTIONS WITH
ANSWERS


Forensic biology incorporates related areas of - CORRECT
ANSWERS ✔✔- Bodily fluid identification (serology)
- Deoxyribonucleic acid (DNA) analysis


Serology - CORRECT ANSWERS ✔✔-Techniques are used to screen
evidence items for the prescience and type of body fluid disposition
- analyses and targets a the biochemicals and cells that define
distinctive functional characteristics of different body fluids:
hemoglobin in blood and spermatozoa in semen


Deoxyribonucleic acid - CORRECT ANSWERS ✔✔genetic
information that dictates the firm and development of an organism.
A molecule found in almost all human cells


DNA is the genetic blueprint of: - CORRECT ANSWERS ✔✔Life


Each strand of the helix is composed of: - CORRECT ANSWERS
✔✔long chains of nucleotides, composedof a phosphate group, a
type of sugar called deoyribose, and one of four nitrogen-containing
bases

,4 bases of DNA - CORRECT ANSWERS ✔✔Adenine(A),
Thymine(T), Guanine(G), Cytosine(C)`


What 2 subunits form base pairs(BP) - CORRECT ANSWERS ✔✔-
Adenine(A) with Thymine(T)
- Guanine(G) with Cytosine(C)


Strands of DNA form codes of: - CORRECT ANSWERS ✔✔proteins
(genes) that provide genetic information in the organism, like hair
color, height, hair texture and skin


Human DNA contain approx.: - CORRECT ANSWERS ✔✔3 billion
total number of base pairs


Chromosomes - CORRECT ANSWERS ✔✔structures carrying
molecular strands of DNA


Genome - CORRECT ANSWERS ✔✔one cell collection of
chromosomes


Humans inherit: - CORRECT ANSWERS ✔✔a genome of 23
chromosomes from each parent for a total of 46.

,Rosalind Franklin - CORRECT ANSWERS ✔✔- died at 36
- contributions to understanding DNA, including RNA viruses coal
and graphite
- found being female is significant as oppurtunities were limited to
women chemical structure of DNA similarly to all cellular
organisms.


First DNA case - CORRECT ANSWERS ✔✔- Narborough England
- rape and murder of 2, 15yo girls
- in ealry 1980, Dr Jeffery's lab produced first "restricition fragment
Length polymorphism" = RFLP


Dr Alec Jeffery - CORRECT ANSWERS ✔✔- Studied at Leicester
University - England
- studying DNA variations and the evolution of gene families
- his interest and goal was to develop markers (a type of
identification tag) to track the position of these genes


RFLP - CORRECT ANSWERS ✔✔Restriction Fragment Length
Polymorphism
- Created 1980 in Dr. Jeffery's lab

, - a molecular method of genetic analysis that allows individuals to be
identified based on unique patterns of restriction enzyme cutting in
specific regions of DNA


1984 - CORRECT ANSWERS ✔✔Jefferys developed and used the
first DNA tests to be applied to a criminal case


DNA Fingerprinting - CORRECT ANSWERS ✔✔- first-generation
typing system made by Dr.Jefferys.
- this method looks at sections of DNA located in different regions on
different chromosomes
- multilocus typing system


DNA typing - CORRECT ANSWERS ✔✔describes the system of
assessing variations in sections of DNA for analysis


DNA profiling - CORRECT ANSWERS ✔✔the second generation
typing system (a more recent development) that looks at one area- a
single locus- on a single chromosome. this is the method now in use
for forensic analysis


DNA profile - CORRECT ANSWERS ✔✔most simply viewed as a set
of numbers representing the DNA 'variants' as target locations