The outcome of the process illustrated in Figure 26-2 is:
a. four new genetically identical cells that differ genetically from what they were before.
b. four new but genetically distinct cells.
c. two new genetically identical cells that differ genetically from what they were before.
d. two new but genetically distinct cells.
e. one male and one female cell.
C
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After some time, the tip of a plant that has been forced into a horizontal position grows upward. This phenomenon is related to _____
A) calcium release from the endoplasmic reticulum of shaded cells B) whether the plant is in the northern or southern hemisphere C) gibberellin production by stems D) auxin production in cells receiving red light E) auxin movement toward the lower side of the stem
How are root nodule and arbuscular mycorrhizal symbioses similar?
A) They both use lipochitin oligosaccharide signaling factors to initiate root colonization. B) They both supply nitrogen to the host plant through nitrogen fixation. C) They both increase absorption of nutrients from soil. D) They are both required for the growth and reproduction of their host plants.
Acridine orange is a planar molecule that intercalates into DNA and can cause insertion or deletion (indel) mutations. Which of the following molecules is also planar and likely to cause insertion or deletion mutations?
A. ethidium bromide B. lecithin C. methane D. capsaicin
With ____, individual cells can be coaxed to divide and form embryos in a laboratory
a. in vitro fertilization b. sexual reproduction c. tissue culture propagation d. vegetative reproduction e. grafting