Transcription takes place in three steps: initiation, elongation and termination
a. true
b. false
Answer: a. true
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If you were observing a newly discovered animal and wanted to determine if it reproduces sexually or asexually, you could
A. perform genetic screening on the parents and offspring to see if the offspring are genetically identical to parents. B. examine males to see if sperm can be produced. C. try to observe mating behavior. D. look carefully for nests with eggs. E. None of the answer choices is correct.
Which feature is found in the bony fish but not in the cartilaginous fish?
A. scales B. ectothermy C. swim bladder D. lateral line system for detecting prey E. endothermy
Where in a flowering plant would meiosis be expected to occur?
a. in trichomes b. in leaves c. in roots d. in flowers
Which of the following phenomena produces magnification?
A) the wavelength of a radiation source B) the refraction of radiation as it passes through a lens C) the thickness of a microscopic specimen D) the numerical aperture of a lens E) the length of an objective lens