Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island biogeography principles, to answer the question(s) below
Which island would likely have the greatest species diversity?
A) A
B) B
C) C
D) D
E) E
Answer: A
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Changes in the phenotypes within a population ultimately result from changes in what?
a. changes in the rate of mutation b. changes in the rate of gene flow c. changes in the rate of genetic drift d. changes in the gene pool
Which cells are produced during meiosis I?
a. spermatogonia b. primary spermatocytes c. secondary spermatocytes d. spermatids e. sperm
Which of the following statements about inositol triphosphate is FALSE?
It is formed in the cytoplasm. It is synthesized by a membrane-bound enzyme. It is synthesized by the enzyme phosphatase. It binds to and opens Ca2+ channels in the endoplasmic reticulum.
Organic compounds break down spontaneously in the presence of ____; hence, life probably never
would have emerged if the ancient atmosphere had been the same as the present one. a. carbon dioxide b. hydrogen c. oxygen d. nitrogen e. silica