A researcher decides to repeat an experiment and reassess results first established in the 1930's about why plants grow toward light. Which of the following is the best reason for conduction this experiment?
a) plant behavior could have modified due to evolutionary processes since the experiments were first done
b) new breeds of plants discovered since the 1930's have not yet been shown to have to same light responses
c) shifts in average temperatures produced by global warming may affect plants in ways that are not yet understood
d) equipment and methods developed since the 1930's may produce better data and provide mechanistic detail.
Answer: d) equipment and methods developed since the 1930's may produce better data and provide mechanistic detail.
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DNA that is separate and apart from the chromosome in a prokaryote is the:
a. Ribosome b. Endospore c. Nucleus d. Nucleoid e. Plasmid
The degree to which a trait is expressed in individuals is the ____________________ of the trait. Fill in the blank(s) with the appropriate word(s)
Protein filaments with a diameter of 4-7 nm that play a role in cell movement and shape change are called ________.
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