Isolating mechanisms leading to speciation have been documented by ________
A) geographic isolation
B) polyploidy
C) temporal isolation
D) a mutation in a single gene
E) All of the above.
E
You might also like to view...
Which of the following series is arranged in the correct sequence for nitrogen fixation and its subsequent use?
A. atmospheric nitrogen; use of bacterial nitrogenase; production of ammonia; conversion by plants or algae; synthesis of proteins B. atmospheric nitrogen; use of bacterial nitrogenase; conversion by plants or algae; production of ammonia; synthesis of proteins C. atmospheric nitrogen; production of ammonia; use of bacterial nitrogenase; conversion by plants or algae; synthesis of proteins D. atmospheric nitrogen; production of ammonia; use of bacterial nitrogenase; synthesis of proteins; conversion by plants or algae E. ammonia; conversion by plants and algae; production of atmospheric nitrogen; use of bacterial nitrogenase; synthesis of proteins
When is asexual reproduction more likely to happen? a. Asexual reproduction is completely random when it occurs
b. During a relatively stable environment. c. Species cannot reproduce asexually. d. During a time of great change in the environment. e. During a stressful time in the species lifetime.
Which process is exemplified by the opening of flowers in the late afternoon in the aptly named four-o’clock plant (Mirabilis jalapa)?
1.Circadian rhythm 2.Nasticity 3.Photoperiodism 4.Vernalization
Which is an advantage(s) of a more complex form of metamorphosis where an adult is very different from the larvae?
a. This would allow an insect species to exploit two different food sources b. An insect could evade a predator specialized for one stage c. It allows an insect to overwinter in resistant stage d. All of the choices are advantages e. None of the choices are correct