\nQuestion 1. 1. Crossing over and the random distribution of maternal and paternal chromosomes are responsible for
\n(Points : 1)
\ngenetic stability.
\ncell division.
\ngenetic variation.
\nDNA synthesis.
\nnone of the above
\nQuestion 2. 2. A measurable or observable trait or characteristic of an organism is called a(n)
\n(Points : 1)
\nphenotype
\ngenotype
\nallele
\ngene
\nQuestion 3. 3. A functional chromosome contains which of the following?
\n(Points : 1)
\norigin of replication
\ntelomeres
\ncentromeres
\nall of the above
\nQuestion 4. 4. Errors in chromosome separation are rarely a problem for an organism.
\n(Points : 1)
\nTrue
\nFalse
\nQuestion 5. 5. Genetics contribute to advances in:
\n(Points : 1)
\nagriculture.
\npharmaceuticals.
\nmedicine.
\nmodern biology.
\nAll of the above.
\nQuestion 6. 6. Bacteria and viruses can be used to study genes and inheritance, even though they are structurally and metabolically different from animal and plant cells.
\n(Points : 1)
\nTrue
\nFalse
\nQuestion 7. 7. The function(s) of a DNA repair gene is studied by the subdivision of genetics called:
\n(Points : 1)
\npopulation genetics.
\ntransmission genetics.
\nmolecular genetics.
\nQuestion 8. 8. Sister chromatids separate and move toward opposite poles during which phase of mitosis?
\n(Points : 1)
\nprophase
\npro-metaphase
\nmetaphase
\nanaphase
\ntelophase
\nQuestion 9. 9. If a typical somatic cell has 32 chromosomes, how many chromosomes are expected in each gamete of that organism?
\n(Points : 1)
\n46
\n64
\n0
\n16
\n32
\nQuestion 10. 10. Progression through the different phases of the cell cycle is regulated by key transition points called checkpoints.
\n(Points : 1)
\nTrue
\nFalse
\nQuestion 11. 11. Crossing over usually occurs during
\n(Points : 1)
\nmeiosis I.
\nmeiosis II.
\nmitosis.
\nS-phase.
\nCrossing over occurs randomly in all division types.
\nQuestion 12. 12. Genetic information can be carried in which of the following biomolecules?
\n(Points : 1)
\nproteins
\nDNA and not RNA
\nRNA and not DNA
\nEither DNA or RNA
\nQuestion 13. 13. A eukaryotic cell in G1 has a mutation that prevents cyclin B from being made. At which cell cycle stage would this cell stop?
\n(Points : 1)
\nG1
\nS
\nG2
\nM (anaphase)
\nM (telophase)
\nQuestion 14. 14. Which stage of meiosis increases genetic variability in the gamete cells?
\n(Points : 1)
\ntelophase
\nprophase I
\nanaphase I
\nanaphase II
\nQuestion 15. 15. Evolution cannot occur without genetic changes in populations.
\n(Points : 1)
\nTrue
\nFalse
\nQuestion 16. 16. Which of the following is not a component within a single nucleotide of a nucleic acid?
\n(Points : 1)
\nnitrogenous base
\nsugar
\npolymerase
\nphosphate
\nQuestion 17. 17. The complete genetic makeup of any organism is its
\n(Points : 1)
\ngenotype
\ngenome
\nproteome
\nDNA
\nQuestion 18. 18. A form of a gene that has a slightly different sequence than other forms of the same gene but encodes the same type of a protein is called a(n)
\n(Points : 1)
\nphenotype
\ngenotype
\nallele
\ngene
\nQuestion 19. 19. In which part of the cell cycle is DNA replicated?
\n(Points : 1)
\nG1
\nG2
\nS
\nM
\nDNA is replicated before the cell cycle.
\nQuestion 20. 20. Permanent, heritable changes in genetic information (DNA) are called
\n(Points : 1)
\nmutations
\ngenes
\nalleles
\ngenome<\/p>\n
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