Which of the following occurs in situations where more than one hormone produces the same effects at the target cell and their combined effects are amplified?
A) antagonism
B) permissiveness
C) synergism
D) summation
C) synergism
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A benefit of _____ diversity is a species’ future potential for adaptation.
a. chemical b. genetic c. ecosystem d. physical
The FOXP2 gene encodes a protein involved in aggressive behavior. Indicate whether the statement is true or false
Contraction of the right ventricle forces blood initially into the
What will be an ideal response?
Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?
A) Natural selection cannot account for losses, but accounts only for new structures and functions. B) Natural selection accounts for these losses by the principle of use and disuse. C) Under particular circumstances that persisted for long periods, each of these structures presented greater costs than benefits. D) The ancestors of these organisms experienced harmful mutations that forced them to lose these structures.