What specialized mechanism allows submerged aquatic plants to disperse their pollen?
a. Heptophilous pollination
b. Halophilous pollination
c. Hydrophilous pollination
d. Hydrophobic pollination
c
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Describe how siRNA functions in regulation of expression and how this can be used as a tool in genetic research
What will be an ideal response?
Which of the following statements concerning tumor necrosis factors (TNF) is false?
a. TNF can be secreted by macrophages. b. TNF may stimulate the inflammatory response. c. The release of large amounts of TNF brings down a high fever. d. TNF kills cancer cells. e. TNF can be secreted by lymphocytes.
The first function of feathers was most likely:a
as protection from predators. b. to insulate. c. to communicate with rivals.
d. as color displays in courtship rituals. e. as protection from parasites.
What process creates daughter cells with a mixture of paternal and maternal chromosomes?
a)asexual reproduction b)semi-conservative replication c)random fertilization d)independent assortment e)mutation