All evolutionarily meaningful characters evolve at the same rate

Indicate whether the statement is true or false.


ANS: F, different rates

Biology & Microbiology

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In which of the following does environment

not play a role? a. depression. b. bipolar disorder. c. schizophrenia. d. depression and schizophrenia. e. it plays a role in all these

Biology & Microbiology

Plants, unlike most animals, can occasionally form new species in one generation. The mechanism by which this happens is 

A. numerous mutations happening at once in an organism. B. isolation. C. punctuated equilibrium. D. a doubling or a tripling of the chromosome numbers.

Biology & Microbiology

Which statement is true of deuterostomes?

A. The second opening into the embryo becomes the anus. B. They have two tissue layers. C. The second opening into the embryo becomes the mouth. D. The first opening into the embryo becomes the mouth. E. They are typically radially symmetrical.

Biology & Microbiology

Which organism is a monotreme?

A) echidna B) kangaroo C) whale D) zebra

Biology & Microbiology