The production of antibiotics is a form of amensalism called
A. satellitism.
B. mutualism.
C. synergism.
D. antibiosis.
E. symbiosis.
Answer: D
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Which of the following is not a typical occurrence in the history of a transposon's appearance in an organism?
A. Transposons could be dispersed to a new host cell by conjugation, viral infection, or accidental uptake of DNA by the cell. B. After its introduction into the new host cell, the transposon is likely to experience a period of high transposition activity. This activity is unlikely to be detrimental to the host cell. C. After introduction into the new host cell, the transposon is likely to increase its copy number. D. Eventually, the transposon becomes subject to silencing processes including mutations in the transposase gene. E. The host may find a way to shut down transposition. One common method is RNA interference.
In the process of initiation, RNA polymerase and several regulatory proteins bind to a(n) ____________________ that marks the beginning of a gene
Fill in the blank(s) with correct word
DNA replication occurs ____
a. during interphase before meiosis b. during prophase I of meiosis c. during prophase II of meiosis d. between meiosis I and meiosis II e. during interkinesis
The most diverse archaeplastida group is composed of ____
a. red algae b. brown algae c. diatoms d. green algae e. charophytes