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Biology 106 > Exam 3 > Flashcards

Exam 3 Flashcards

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1
Q

restiction enzymes

A

cut DNA at specific sites

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2
Q

golden rice carries agents that cause it to synthesize

A

beta carotene

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3
Q

T o F: sticky ends are the single stranded regions at end of DNA fragments

A

true

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4
Q

benefits of transgenetic crops include

A

all choices

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5
Q

transgenic animals used for

A

all the above

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6
Q

valuable contributions of recombinant technology include

A

all choices

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7
Q

before recombinant DNA techniques, HGH was

A

recovered from pituitary glands from human cadavers

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8
Q

embryonic stem cells

A

are pluripotent

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9
Q

adult stem cells have been used to treat leukemia

A

multipotent

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10
Q

gene therapy

A

attempts to provide patients with normal copies of mutant genes

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11
Q

HD transgenic mice

A

are used to study brain structure during early stages of disease

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12
Q

T o F: HGH can be isolated from cow milk

A

True

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13
Q

to produce herbicide resistant transgenic crops

A

bacterial gene inserted into plant genome

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14
Q

before biotechnology was used the main problem with clotting factor isolated from donated blood was

A

contamination by HIV

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15
Q

T o F: plasmids are circular DNA molecules present in many bacteria

A

T

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16
Q

T o F: pigs that contain human HLA genes can potentially be used for organ transplants

A

T

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17
Q

T o F: a trangenic organism is an animal or plant that carries a gene from another species

A

T

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18
Q

Genetic testing can be used to identify which of the following

A

all choices

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19
Q

Prenatal genetic testing is preformed

A

to detect genetic disorders and birth defects of the developing fetus

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20
Q

ultrasound is a

A

noninvasive technique used to image the fetus

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21
Q

ultrasound can aid in diagnosis of

A

Trisomy 21

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22
Q

which of the following is false about CVS

A

it involved recovering fetal cells from the mothers blood

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23
Q

this type of testing is used to test unaffected members

A

carrier testing

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24
Q

30 year old man with history of DH should get what testing done?

A

presymptomatic testing

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25
Q

amnioscentisis is recommended when the mother is 35 years or older because

A

the risk of habving a child with chromosomal abnormality increases

26
Q

recovering fetal cells present in the mothers blood can be difficult becuase

A

only 1 out of every 100,000 is fetal

27
Q

preimplantation genetic diagnosis

A

can be used to check genetic abnormalities before implantation

28
Q

what is mode of inheritance for PKU

A

autosomal recessive

29
Q

what is genetic defect for PKU

A

a mutation in PAH inactivates the phenylalanine more rapidy

30
Q

a women with PKU becomes pregnant. she should

A

avoid phenylalanine

31
Q

since adult polycystic kidney disease is a

A

dominant trait

32
Q

all are conditions that allow population screenings except

A

There must be a cure for the disease

33
Q

tay sachs is a fatal __ trait

A

autosomal recessive

34
Q

T o F: Congress passed a law establishing screening programs for sickle cell

A

true

35
Q

multifactorial traits are affected by

A

genetics and environment

36
Q

ability to taste PCU

A

non tasters are homozygous for the gene

37
Q

supertasters for PTC

A

all choices

38
Q

all choices implicate cancer except

A

exposure to PKU

39
Q

all are autoimmune disorders except

A

breast cancer

40
Q

sickle cell is due to a

A

large deletion

41
Q

T o F: endoxifen is a drug with breast cancers

A

F

42
Q

carriers of sickle cell are resistant to

A

malaria

43
Q

short 5- HTT

A

more at risk to be depressed

44
Q

autoimmune disease and infection

A

usually long time between

45
Q

single nucleotide polymorphosms

A

consist of one nucleotide difference

46
Q

DNA fragments are separated in an aragose gel based on

A

size, with shorts DNA fragment traveling the furthest

47
Q

PCR is a valuable tool for DNA forensics

A

allows the generation of DNA profiles from very small amounts of DNA

48
Q

All are possible sources of DNA except

A

mature red blood cells

49
Q

Analysis of STRS show

A

the more alleles analyzed, , the rater the combinations befcome

50
Q

Combined DNA index system

A

uses a panel of 13 STRS

51
Q

2 types of testing typically offered to trace one’e ancestry

A

mitochondrial DNA and Y chromosme testing

52
Q

T o F: 2 common techniques are restriction fragment length polymorphism analysis and the polymerase chain reaction

A

T

53
Q

T o F: Dna profiles can be prepared from small sample

A

T

54
Q

DNA profile analysis has led to the release of individuals who were wrongly convicted

A

T

55
Q

Intelligence

A

multifactorial trait

56
Q

Which one about Spina biffida is true?

A

increased risk of another child with it

57
Q

fingerprints are

A

unaffected by nutrition of mother

58
Q

in humans, obesity

A

multifactorial trait

59
Q

numerical calculation of same trait in both members of twins is

A

concordance

60
Q

complex traits

A

wide range of phenotypes

61
Q

T o F: for pregnant women a diet deficient in ascorbic acid has led to spin bifid a

A

F

Biology 106 (4 decks)

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