Genes

Question 1

responsible for x methylation in barr bodies

Answer 1

XIST

Question 2

required for the development of testes

Answer 2

SRY

Question 3

promotes ovary development

Answer 3

WNT4

Question 4

Chromosome location of WNT4

Answer 4

Autosome 1

Question 5

Chromosome location of SRY

Answer 5

Y

Question 6

Chromosome location of XIST

Answer 6

X

Question 7

Formed from chromosome 22 after exchange of a large portion for small fragment from a tip of chromosome 9

Answer 7

Philadelphia Chromosome

Question 8

imprinted gene for mouse gene for insulin-like growth factor 2 (Igf2)

Answer 8

paternal

Question 9

Sickle cell mutation

Answer 9

Valine for glutamate in Beta globin

Question 10

operon controls tryptophan production by coordinately controlled enzymes in E. coli

Answer 10

Trp

Question 11

Regulatory gene for Trp

Answer 11

trpR

Question 12

Trp operon type

Answer 12

repressible

Question 13

operon involved in lactose metabolism in E. coli

Answer 13

lac

Question 14

lac type of operon

Answer 14

inducible

Question 15

3 genes in lac operon

Answer 15

lac Z, lac Y, lac A

Question 16

lac gene that codes for a permease, the membrane protein that transports lactose into the cell

Answer 16

lac Y

Question 17

lac gene that codes for transacetylase, an enzyme that detoxifies other molecules entering the cell via the permease

Answer 17

lac A

Question 18

lac gene for β-galactosidase

Answer 18

lac Z

Question 19

gene near the lac operon that codes for a repressor of lac operon

Answer 19

lac I

Question 20

master regulatory gene for muscle cells

Answer 20

myoD

Question 21

regulatory genes that control pattern formation in the late embryo, larva, and adult

Answer 21

homeotic genes

Question 22

when mutant in the mother, results in a mutant phenotype in the offspring, regardless of the offspring’s own genotype

Answer 22

maternal effect genes

Question 23

maternal effect genes that determine orientation of the egg and therefore the fly

Answer 23

egg polarity genes

Question 24

Mutations in this egg polarity gene leads to two tails and no head

Answer 24

bicoid gene

Question 25

named for rat sarcoma, a connective tissue cancer; Encodes a G protein that relays a signal from a growth factor receptor on the plasma membrane to a cascade of protein kinases

Answer 25

ras proto-oncogene

Question 26

named for the 53,000-dalton molecular weight of its protein product; encodes a specific transcription factor that promotes the synthesis of cell cycle–inhibiting proteins so mutations can promote rapid cell growth

Answer 26

p53

Question 27

product halts the cell cycle by binding to cyclin dependent kinases, allowing time for DNA repair; activated by p53

Answer 27

p21

Question 28

tumor suppressor gene often knocked out in colorectal cancer polyps; regulates cell migration and adhesion

Answer 28

adenomatous polyposis coli(APC)

Question 29

tumor suppressor gene mutations associated with increased susceptibility to breast cancer; deal with DNA repair

Answer 29

BRCA1 and BRCA2

Question 30

codes for eye development and has been substituted in mice and frogs for that in flies

Answer 30

Pax-6 gene

Question 31

10% of the human genome; shorter than most functional transposable elements

Answer 31

Alu elements

Question 32

Retrotransposon; 17% of human genome; More active in developing brain cells

Answer 32

LINE-1

Question 33

vital for language in humans

Answer 33

FOXP2

Question 34

180 nucleotide sequence found in all homeotic genes of drosophila

Answer 34

Homeobox

Question 35

homeotic genes in animals

Answer 35

Hox genes

Question 36

hox gene in insects that suppresses leg formation where it is expressed

Answer 36

Ubx

Question 37

provide positional information in an animal embryo

Answer 37

hox genes

Question 38

genes that control the spatial organization of body parts

Answer 38

homeotic gene

Question 39

three plant genes whose expression is required for the formation of mycorrhizae in flowering plants

Answer 39

sym genes

Question 40

differential expression of this homeotic gene is needed for proper distribution of root hairs

Answer 40

GLABRA-2

Question 41

mutant of Arabidopsis where establishment of polarity is defective

Answer 41

gnom mutant

Question 42

maize's homolog of Hox genes; involved in leaf morpholog

Answer 42

KNOTTED-1

Question 43

affects the number and placement of plant organs

Answer 43

MADS-box

Question 44

switched on in the two outer whorls (sepals and petals)

Answer 44

A gene

Question 45

switched on in the two middle whorls (petals and stamens)

Answer 45

B gene

Question 46

switched on in the two inner whorls (stamens and carpels)

Answer 46

C gene

Question 47

from only gene A

Answer 47

sepals

Question 48

from genes A and B

Answer 48

petals

Question 49

from genes B and C

Answer 49

stamens

Question 50

from only gene C

Answer 50

carpal