Which of the following is the most recent example of an evolutionary change in populations?
A. the genetic differences among the various human populations on Earth
B. the occurrence of many different breeds of dogs
C. the presence of long generation times in organisms
D. the evolution of pesticide-resistant insects
D. the evolution of pesticide-resistant insects
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A pile of castings outside the burrow of a polychaete indicates it
a. has just dug a burrow. b. has completed a meal of other worms. c. is a filter feeder. d. is a selective deposit feeder. e. is a nonselective deposit feeder.
The nervous system controls the contraction of in the wall of the bronchioles, thereby adjusting airflow in response to metabolic demands.
A. autonomic; skeletal muscle B. autonomic; smooth muscle C. somatic; skeletal muscle D. somatic; smooth muscle E. autonomic; cartilage
FSH is a hormone important to the proper functioning of the ovaries and testes. This hormone will not be released from the anterior pituitary until ________ is released from the hypothalamus
A) TSH B) GnRH C) ACTH D) LH E) PRL
The first person to suggest a general definition of species was
A. Charles Darwin. B. Carolus Linnaeus. C. John Ray. D. Joseph Priestly.