In a certain bird species, clutch size (the number of
eggs laid by a female at one time) ranges from four
to eight, and the most frequent clutch size is six. This
phenomenon is an example of
a. sexual selection.
b. stabilizing selection.
c. disruptive selection.
d. directional selection.
e. divergent selection.
Answer: b
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All of the following are unique to plant cells except
A) leaf peroxisomes. B) glyoxysomes. C) nodule peroxisomes. D) peroxisomes. E) chloroplasts.
What type of junction allows electrical signals to rapidly spread from cell to cell?
a. tight junctions b. elastic junctions c. basement membranes d. desmosomes e. gap junctions
Mules are an example of:
a. hybrid breakdown. b. hybrid inviability. c. hybrid sterility. d. macroevolution. e. microevolution
Fossil fuels are the major reservoir in the phosphorus cycle
Indicate whether the statement is true or false