Biology 1001 Final Exam Review Questions

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ndumas2
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150328
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Biology 1001 Final Exam Review Questions
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2012-04-26 16:10:35
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Biology 1001 Final Exam
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Review Questions for bio final exam
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  1. Gregor Mendel concluded that each pea has two units for each trait, and each gamete contains one unit. Mendel's "units" are now called what?
    genes
  2. Peas were a good organism of choice for Mendel for what reason?
    he could study one trait at a time.
  3. Assuming complete dominance for this trait, what is the ratio of phenotypes in the offspring produced by the cross Aa × Aa?
    75% dominant: 25% recessive
  4. If the allele for inflated pea pods (I) is dominant to the allele for constricted pods (i), then the cross Ii × ii is expected to produce what?
    half with inflated and half with constricted pods.
  5. According to the law of segregation, what happens?
    pairs of alleles separate during the formation of gametes.
  6. According to the law of segregation, in an organism with the genotype Aa will have/produce what?
    half the gametes have A and half have a.
  7. A recessive allele is one that has/does what?
    whose effect is masked by a dominant allele
  8. All of the following statements about genotypes and phenotypes are true EXCEPT what?
    matings between individuals with dominant phenotypes cannot produce offspring with recessive phenotypes.
  9. If, in a heterozygous individual, only one allele is expressed in the phenotype, that allele is what?
    dominant
  10. The physical manifestation of an organism's genes is termed what?
    phenotype
  11. Which of the following is NOT a probable consequence of DNA damage in a cell?
    The cell may become improved
  12. The rules for base pairing in DNA are what?
    A with T, and G with C
  13. In DNA, phosphate groups bond to what?
    deoxyribose
  14. Complementary base pairs are held together by what types of bonds?
    hydrogen bonds
  15. The DNA molecule could be compared to a...
    ladder
  16. Which scientist[s] identified the transforming substance involved in changing rough [R] bacteria to smooth [S]?
    Avery
  17. Pyrimidines have how many rings in their structure?
    1
  18. Based on your knowledge of Chargraff's rules, if an organism has a 11% cytosine content, then the percentage of adenine should be what?
    39%
  19. DNA & RNA strands can ONLY be extended in the 5' to 3' direction.
    True
  20. What mode of DNA replication is illustrated by this picture?
    semi-conservative
  21. Which of the following is NOT a goal of biotechnology?
    creating humans with higher intelligence levels
  22. Manipulating the molecular basis of inheritance by recombinant DNA technology is called?
    biotechnology
  23. Biotechnology CANNOT be used to?
    alter the intelligence levels of newborn infants.
  24. Which of the following results from inserting foreign DNA into an organism to produce a new gene combination?
    recombinant DNA
  25. A cell or organism that contains foreign DNA inserted into its own genetic material is termed?
    transgenic
  26. Goals of genetic engineering include all of the following EXCEPT?
    • <a> to learn more about genetic inheritance.
    • <b> to learn more about genetic diseases.
    • <c> to learn more about bacterial inheritance.
    • <d> to provide economic and social benefits.
  27. Small accessory chromosomes found in bacteria and useful in recombinant DNA procedures are called?
    plasmids
  28. Plasmids are?
    small self-replicating DNA molecules in bacteria
  29. DNA recombination does NOT occur between different species in nature by?
    sexual reproduction in animals.
  30. Recombinant DNA technology?
    involves combining existing genes from different organisms in new ways.

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