. 1. Crossing over and the random distribution of materna

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. 1. Crossing over and the random distribution of maternal and paternal chromosomes are responsible for (Points : 1) genetic stability. cell division. genetic variation. DNA synthesis. none of the above 2. 2. A measurable or observable trait or characteristic of an organism is called a(n) (Points : 1) phenotype genotype allele gene 3. 3. A functional chromosome contains which of the following? (Points : 1) origin of replication telomeres centromeres all of the above 4. 4. Errors in chromosome separation are rarely a problem for an organism. (Points : 1) True False 5. 5. Genetics contribute to advances in: (Points : 1) agriculture. pharmaceuticals. medicine. modern biology. All of the above. 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. (Points : 1) True False 7. 7. The function(s) of a DNA repair gene is studied by the subdivision of genetics called: (Points : 1) population genetics. transmission genetics. molecular genetics. 8. 8. Sister chromatids separate and move toward opposite poles during which phase of mitosis? (Points : 1) prophase pro-metaphase metaphase anaphase telophase 9. 9. If a typical somatic cell has 32 chromosomes how many chromosomes are expected in each gamete of that organism? (Points : 1) 46 64 0 16 32 0. 10. Progression through the different phases of the cell cycle is regulated by key transition points called checkpoints. (Points : 1) True False 1. 11. Crossing over usually occurs during (Points : 1) meiosis I. meiosis II. mitosis. S-phase. Crossing over occurs randomly in all division types. 2. 12. Genetic information can be carried in which of the following biomolecules? (Points : 1) proteins DNA and not RNA RNA and not DNA Either DNA or RNA 3. 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? (Points : 1) G1 S G2 M (anaphase) M (telophase) 4. 14. Which stage of meiosis increases genetic variability in the gamete cells? (Points : 1) telophase prophase I anaphase I anaphase II 5. 15. Evolution cannot occur without genetic changes in populations. (Points : 1) True False 6. 16. Which of the following is not a component within a single nucleotide of a nucleic acid? (Points : 1) nitrogenous base sugar polymerase phosphate 7. 17. The complete genetic makeup of any organism is its (Points : 1) genotype genome proteome DNA 8. 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) (Points : 1) phenotype genotype allele gene 9. 19. In which part of the cell cycle is DNA replicated? (Points : 1) G1 G2 S M DNA is replicated before the cell cycle. 20. 20. Permanent heritable changes in genetic information (DNA) are called (Points : 1) mutations genes alleles genome

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