Exam 3 Flashcards
restiction enzymes
cut DNA at specific sites
golden rice carries agents that cause it to synthesize
beta carotene
T o F: sticky ends are the single stranded regions at end of DNA fragments
true
benefits of transgenetic crops include
all choices
transgenic animals used for
all the above
valuable contributions of recombinant technology include
all choices
before recombinant DNA techniques, HGH was
recovered from pituitary glands from human cadavers
embryonic stem cells
are pluripotent
adult stem cells have been used to treat leukemia
multipotent
gene therapy
attempts to provide patients with normal copies of mutant genes
HD transgenic mice
are used to study brain structure during early stages of disease
T o F: HGH can be isolated from cow milk
True
to produce herbicide resistant transgenic crops
bacterial gene inserted into plant genome
before biotechnology was used the main problem with clotting factor isolated from donated blood was
contamination by HIV
T o F: plasmids are circular DNA molecules present in many bacteria
T
T o F: pigs that contain human HLA genes can potentially be used for organ transplants
T
T o F: a trangenic organism is an animal or plant that carries a gene from another species
T
Genetic testing can be used to identify which of the following
all choices
Prenatal genetic testing is preformed
to detect genetic disorders and birth defects of the developing fetus
ultrasound is a
noninvasive technique used to image the fetus
ultrasound can aid in diagnosis of
Trisomy 21
which of the following is false about CVS
it involved recovering fetal cells from the mothers blood
this type of testing is used to test unaffected members
carrier testing
30 year old man with history of DH should get what testing done?
presymptomatic testing
amnioscentisis is recommended when the mother is 35 years or older because
the risk of habving a child with chromosomal abnormality increases
recovering fetal cells present in the mothers blood can be difficult becuase
only 1 out of every 100,000 is fetal
preimplantation genetic diagnosis
can be used to check genetic abnormalities before implantation
what is mode of inheritance for PKU
autosomal recessive
what is genetic defect for PKU
a mutation in PAH inactivates the phenylalanine more rapidy
a women with PKU becomes pregnant. she should
avoid phenylalanine
since adult polycystic kidney disease is a
dominant trait
all are conditions that allow population screenings except
There must be a cure for the disease
tay sachs is a fatal __ trait
autosomal recessive
T o F: Congress passed a law establishing screening programs for sickle cell
true
multifactorial traits are affected by
genetics and environment
ability to taste PCU
non tasters are homozygous for the gene
supertasters for PTC
all choices
all choices implicate cancer except
exposure to PKU
all are autoimmune disorders except
breast cancer
sickle cell is due to a
large deletion
T o F: endoxifen is a drug with breast cancers
F
carriers of sickle cell are resistant to
malaria
short 5- HTT
more at risk to be depressed
autoimmune disease and infection
usually long time between
single nucleotide polymorphosms
consist of one nucleotide difference
DNA fragments are separated in an aragose gel based on
size, with shorts DNA fragment traveling the furthest
PCR is a valuable tool for DNA forensics
allows the generation of DNA profiles from very small amounts of DNA
All are possible sources of DNA except
mature red blood cells
Analysis of STRS show
the more alleles analyzed, , the rater the combinations befcome
Combined DNA index system
uses a panel of 13 STRS
2 types of testing typically offered to trace one’e ancestry
mitochondrial DNA and Y chromosme testing
T o F: 2 common techniques are restriction fragment length polymorphism analysis and the polymerase chain reaction
T
T o F: Dna profiles can be prepared from small sample
T
DNA profile analysis has led to the release of individuals who were wrongly convicted
T
Intelligence
multifactorial trait
Which one about Spina biffida is true?
increased risk of another child with it
fingerprints are
unaffected by nutrition of mother
in humans, obesity
multifactorial trait
numerical calculation of same trait in both members of twins is
concordance
complex traits
wide range of phenotypes
T o F: for pregnant women a diet deficient in ascorbic acid has led to spin bifid a
F
