In California, a species of salamanders were geographically separated over time. The group that lived in southern California relied heavily on large gold blotches on their skin that helped to camouflage them from predators. The group that lived along the coast adopted a color pattern that mimicked a poisonous, colorful newt common to that area. Instead of being camouflaged, these salamanders advertised their colors. What type of selection process has occurred over time?
A. theoretical selection
B. natural selection
C. experimental selection
D. artificial selection
Answer: B
Biology & Microbiology
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A hollow neural tube will develop into all of the following EXCEPT
a. fluid-filled ventricles. b. the forebrain, midbrain, and hindbrain. c. the central canal of the spinal cord. d. spinal nerves. e. the spinal cord.
Biology & Microbiology
Insulin and glucagon exhibit which type of hormone interaction?
a. synergistic b. permissive c. opposing d. unrelating e. mutual
Biology & Microbiology
Four of the five answers listed below are related by a similar source. Select the exception
a. prolactin b. progesterone c. androgen d. estrogen e. testosterone
Biology & Microbiology
It is the (larvae/nymph/adult) stage of the tick genus Ixodes that most often transmits Lyme disease to humans
What will be an ideal response?
Biology & Microbiology