Where does karyogamy occur in basidiomycetes?
a. basidia
b. conidiophores
c. sporangia
d. asci
e. zygospores
A
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Behavior can be defined as the way an animal responds to a(n) ________ in its environment.
Fill in the blank(s) with the appropriate word(s).
You have discovered an "Exo–" mutant form of DNA polymerase in which the 3?-to-5? exonuclease function has been destroyed but the ability to join nucleotides together is unchanged
Which of the following properties do you expect the mutant polymerase to have? (a) It will polymerize in both the 5?-to-3? direction and the 3?-to-5? direction. (b) It will polymerize more slowly than the normal Exo+ polymerase. (c) It will fall off the template more frequently than the normal Exo+ polymerase. (d) It will be more likely to generate mismatched base pairs.
A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a ________ culture.
A. semicontinuous B. continuous C. batch D. fed-batch
You purchase two identical houseplants and place them side by side on your windowsill. You water both plants equally. One plant, plant a, you leave alone. On the other plant, plant b, you inject florigen into the cells of the apical meristem. Which of the following would you expect to occur?
A. Both plants will produce flowers at the same time, but plant b will have more of them. B. Plant b will produce a flower at its apical meristem. C. Once the flower is gone, the apical meristem will develop again, and plant b will continue to grow from that stem. D. In subsequent years, plant b will only generate flowers in the same place. E. While flowering, the leaves will stop growing on plant b because florigen inhibitsleaf meristems. F. Once the flower is gone, plant b will grow taller, but only from growth of lateral meristems.