What kind of experiment or analysis could you conduct to define the location of the promoter elements of protein-coding genes?
What will be an ideal response?
You could examine the effect of mutations that delete or alter base pairs upstream from the starting point of transcription and to see whether those mutants affect transcription. Mutations that significantly affect transcription define important promoter elements. Alternatively, you could compare the DNA sequences upstream of a number of protein-coding genes to see whether there are any regions with similar sequences.
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Which term refers to plants that complete their life cycle in one growing season?
a. perennials b. annuals c. monocots d. biennials e. eudicots
Niche refers to the
a. home range of an animal. b. preferred habitat for an organism. c. functional role of a species in a community. d. territory occupied by a species. e. locale in which a species lives
The reason that an action potential is so brief is that
a. a wave of repolarization immediately follows the rising portion of the spike. b. the closing of potassium gates allows the voltage difference across the neural membrane to be restored. c. the channels for sodium movement remain open. d. the sodium-potassium pump restores the electrical gradients. e. the membrane limits electrical activity.
Identify and briefly explain three adaptations of flowering plants that contributed to their evolutionary
expansion and success What will be an ideal response?