How long is the typical ovarian cycle?
a. 26 days
b. 24 hours
c. 28 days
d. 31 days
e. 22 days
c
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Amoeboid protozoans are autotrophic
Indicate whether the statement is true or false
Which of the following features is characteristic of all
life? a. organization of molecules into cells b. metabolic control using enzymes c. a continuous flow of sustaining energy d. DNA with its hereditary code e. all of these
Which situation is most likely to decrease genetic variation?
A. directional selection B. mutation C. stabilizing selection D. diversifying selection
Resource partitioning can often be seen in similar species that occupy the same geographic area. These species avoid competition by living in different portions of the habitat or by utilizing different food or other resources and are called ________ species.
A. fundamental B. allopatric C. sympatric D. exploitative E. competitive