The tall and short phenotypes in pea plants are examples of
A. polygenic traits.
B. continuous traits.
C. multifactorial traits.
D. discontinuous traits.
E. gene interaction.
D
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An earthworm detects sound
a. through specialized tympanic membranes located near the head. b. through a thinned region of the exoskeleton. c. through general mechanoreceptors on its skin. d. by using a specialized organ that measures the frequency of vibration of the surrounding dirt particles. e. through a series of mechanoreceptors arranged in a lateral line.
If left untreated, syphilis infections go through four stages. The first stage is a sore called a chancre. The signs of the second stage are
A. a yellowish-white discharge from the urethra. B. rash, sore throat, and sores in the mouth C. very few, with many victims having no symptoms. D. some nerve damage, loss of some teeth, and perhaps a dimming of color vision. E. persistence of the chancre and bleeding at the chancre site.
Stirred fermenters can range in size from 3 liters to ________ liters or larger, depending on production requirements.
Fill in the blank(s) with the appropriate word(s).
This tissue is found in the gut
a. A b. B c. C d. D e. E