1
The bread wheat, Triticum aestivum, that is commonly used all over the world, isA) hexaploid B) tetraploid C) triploid D) diploid 2
The difference between a simple tandem array and a compound tandem array isA) the frequency of different sequences B) the direction the sequences face (left or right) C) the number of different sequences involved D) the number of repetitions of sequences 3
In the creation of a microarray (biochip), fragments of DNA are placed on aA) microscope slide B) circuit board C) silicone chip D) membrane 4
Proteomics is the study ofA) all proteins in an organism B) gene-transcribing proteins C) structural proteins of a cell D) regulating proteins in humans 5
Increased genetic diversity following extended time in a tissue culture is a problem calledA) gene alteration B) temporal modification C) somaclonal variation D) culture shock 6
A mass of dividing, undifferentiated cells in a tissue culture is calledA) a shield B) a callus C) an embryoid D) an aggregate E) a plasmodium 7
Approximately _______________ % of the world's production of fats and oils comes from plants.A) 15 B) 25 C) 45 D) 75 E) 95 8
Electroporation is a technique used withA) calluses B) pollen C) protoplasts D) organs E) cell suspensions 9
To produce plants that are homozygous for all traits, the best choice isA) cell suspension culture B) callus culture C) anther / pollen culture D) plant organ culture E) protoplast culture 10
Chloroplast DNA isA) separate from nuclear DNA B) coded by the nucleus C) paternally inherited D) a subset of nuclear DNA E) transformed nuclear DNA 11
Cell suspension cultures requireA) organogenesis B) b. electroporation C) differentiation D) aggregation E) disaggregation 12
The function of "high-copy-number DNA" isA) encoding most genes B) encoding rRNA C) encoding a single gene D) encoding tRNA E) unknown 13
Genetic engineering has modified _______________ for the creation of mono-unsaturated fatty acids.A) PCR denaturase B) QTL polymerase C) LCP lipase D) QLR esterase E) ACP desaturase 14
Genetic engineering has succeeded in modifying canola oil to replaceA) yogurt B) coconut oil C) palm oil D) cocoa butter E) margarine 15
Most crops grown in the United States yield less than _______________ % of their genetic potential.A) 10 B) 20 C) 50 D) 60 E) 70 16
If you want to use a plant tissue culture as a chemical factory for vitamins, chooseA) suspension cultures B) callus cultures C) organ cultures D) anther pollen cultures E) protoplast cultures 17
The function of "low-copy-number DNA" isA) encoding most genes B) encoding rRNA C) encoding a single gene D) encoding tRNA E) unknown 18
The fastest way to a ripe tomato using tissue culture is byA) anther / pollen culture B) plant organ culture C) protoplast culture D) callus culture E) cell suspension culture 19
A characteristic feature of the chloroplast genome is the presence ofA) two simple tandem arrays B) two repeat / repeat interspersions C) two identical inverted repeats D) two compound tandem arrays E) two repeat / single-copy interspersions 20
Tools to detect polymorphism in plants are _______________ maps.A) RFLP and QTL B) AFLP and PCR C) PCR and QTL D) RFLP and AFLP E) AFLP and QTL 21
A plant useful in the study of plant genomes because of its small genome size isA) Avena sativa B) Petunia porodii C) Tulipa spp. D) Arabidopsis thaliana E) Pisum sativum 22
Sequencing efforts are underway for _______________ as a model for a small monocot genome.A) rice B) corn C) barley D) wheat E) soy beans 23
Most plant tissue cultures are initiated fromA) calluses B) explants C) plantlets D) protoplasts E) anthers 24
Pores in protoplasts may be opened to DNA by the application ofA) magnetism B) light C) enzymes D) ultrasound E) electricity 25
A large inversion of chloroplast DNA is found in the _______________ family.A) castor bean B) sunflower C) oats D) Arabidopsis E) pea 26
The function of "medium -copy -number DNA" isA) encoding most genes B) encoding rRNA C) encoding a single gene D) encoding tRNA E) unknown 27
The high-copy-number-DNA in plantsA) codes for rRNA B) codes for proteins required for plant metabolism C) are called transposable elements D) have no known function E) function as enhancers and promoters 28
Which of the following are mismatched?A) simple tandem array-repetitive sequence in the same orientation B) compound tandem array-repetitive sequence in the same orientation C) inverted repeats-repetitive sequence in the opposite orientation D) single-copy gene-sequence is not repeated E) all are correctly matched 29
The DNA in chloroplastsA) is less complex and less diverse than the nuclear DNA in plants B) has many prokaryotic features C) is not subject to modifications caused by transposable elements D) is used to trace evolutionary patterns in plants E) all of the above 30
The genome sequencing of rice is important becauseA) the rice genome is very unique and contains genes not found in other plants B) the rice genome is very large compared to the DNA of other grains and so more genes will be identified C) it can identify genes associated with disease resistance, growth capacity, etc. D) it has a rapid life cycle and has many identifiable mutations E) all of the above 31
Unlike the somatic cells of animals, plant cells can be grown in tissue culture and regenerate new plantsA) because each cell contains the entire genome B) because plant cells can dedifferentiate and revert back to seeds C) because plant cells are able to express genes that weren't previously expressed D) both a and b E) both b and c 32
Which of the following are mismatched?A) cell suspension culture-somatic cell embryogenesis B) protoplast isolation-hybrids C) homozygous plants-anther/pollen culture D) callus culture-differentiated tissues regenerate E) all are correctly matched 33
Plant transformation isA) when a plant grown in culture generates increased genetic variation B) when plant cells in suspension cultures form individual embryos that can grow into plants C) the incorporation of foreign DNA into the plant genome D) when dedifferentiated callus cells develop into tissue that is different from the original source tissue E) none of the above 34
The world currently farms an area about the size of South America and the food production from this area is expected to sustain the growing population.A) True B) False 35
The genetic engineering of crop plants can make them healthier and more beneficial to humans.A) True B) False 36
Plant genomes are more complex than other eukaryotic cells at the DNA level but not necessarily at the chromosome level.A) True B) False 37
The evolutionary history of wheat shows how one species can affect the emergence of new species.A) True B) False