In birds, the ________ of Fabricius is where B cells undergo maturation.
Fill in the blank(s) with the appropriate word(s).
bursa
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Which of the following is the most recent example of evolution and natural selection?
A. the genetic differences among the various populations on Earth B. the occurrence of many different breeds of dogs C. the development of pesticide-resistant insects D. the presence of long generation times in organisms
An apoenzyme
A. is the protein part of a holoenzyme. B. is also called a coenzyme. C. is often an inorganic metal ion. D. is part of a simple enzyme. E. is an RNA molecule.
Darwin observed that
A. organisms in a normal population differ in reproductive success. B. members of a population vary in their functional, physical, and behavioral characteristics. C. there is a constant struggle for survival of organisms. D. All of the choices are correct. E. None of the choices are correct.
An adventitious root is a root that occurs in an unusual location
____________________ Indicate whether the statement is true or false.