#Question id: 11058
#Section 1: Ecology
The pufferfish, a common marine fish, has extensive spines that extend outward when it swallows water, becoming several times its normal size. This is an example of what kind of defense against predation?
#Question id: 3487
#Section 2: Evolution
Which of the following is true of innate behaviors?
A) Genes have very little influence on the expression of innate behaviors.
B) Innate behaviors tend to vary considerably among members of a population.
C) Innate behaviors are limited to invertebrate animals.
D) Innate behaviors are expressed in most individuals in a population across a wide range of environmental conditions.
E) Innate behaviors occur in invertebrates and some vertebrates but not in mammals.
#Question id: 4953
#Section 2: Evolution
Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth. Which graph below, if the results were produced abiotically, would have the greatest promise for revealing important information about the origin or Earthʹs first genetic system?
#Question id: 11243
#Section 2: Evolution
Which of the following would be a hermaphrodite?
#Question id: 11174
#Section 2: Evolution
Why might a peahen choose to mate with a peacock with a long, gaudy tail?