The microtubules that overlap in the center of the mitotic spindle are called _______ microtubules.
a. astral
b. polar
c. kinetochore
d. central
e. minus-end
Ans: b. polar
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Organic molecules have a carbon backbone and _____ such as -OH and -NH2 that affect their chemical properties
A. chemical groups B. R groups C. extension groups D. functional groups
The ________ is the collection of microorganisms (and their genes) that are normally present in and on an organism.
Fill in the blank(s) with the appropriate word(s).
People with the disease known as sickle-cell anemia are often better able to survive malaria because of
a. balanced polymorphism. b. heterozygote advantage. c. frequency dependent selection. d. disruptive selection. e. stabilizing selection.
Ionic bonds form as a result of _________.
Fill in the blank(s) with the appropriate word(s).