From what are fruits derived?
A. styles
B. ovaries
C. stigmas
D. anthers
E. filaments
B. ovaries
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By the end of the first trimester of pregnancy, all of the major ____________________ have formed and are functional
Fill in the blank(s) with correct word
What is the result of crossing over?
a. mutation b. sex selection c. recombination d. gene linkage
The Cholodny-Went hypothesis has been proposed to explain how plants bend toward a directional light source. What does this hypothesis suggest?
A. Plants use phototropins to receive a blue-light signal. B. The tip of the plant shoot is important for bending. C. Auxin is produced in cells in response to light and causes bending. D. Asymmetric auxin distribution causes differential cell elongation that causes bending.
Which of the following experiments would be best for testing the hypothesis that the enzymes did not perform as expected because the temperature was too high?
A) Produce one batch of blue jeans with twice as much enzyme as another batch of blue jeans while keeping the temperature the same, and then compare how the lightness of the blue jeans varies between batches. B) Produce multiple batches of blue jeans at several different temperatures but with the same enzyme concentration and then compare how the lightness of the blue jeans varies between batches. C) Produce multiple batches of blue jeans at several different temperatures and with different enzyme concentrations and then compare how the lightness of the blue jeans varies between batches. D) Produce one batch of blue jeans at a high temperature without the enzyme and another batch of blue jeans at a low temperature with the enzyme and then compare how the lightness of the blue jeans varies between batches.