Self-study
Wirth: Support All efforts to identify a gene responsible for predisposing people to manic-depression have failed. ██ █████ ██████ ███ ███████████ ███ █████ ████ █████ ██ ██ █████████████████ ██████ ██████████ ██ █████ ███████████ ███ ██████ ███ █████ ████ ████ ██████ ███ ███████████ ███████████ ██ ████████████████ ██ ██████ ██████
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Summarize Argument
Wirth concludes that no one is genetically predisposed to manic-depression. He supports this by saying that all attempts to identify a “manic-depression gene” have failed, and most researchers now agree that no such gene exists.
Identify and Describe Flaw
Chang points out that Wirth’s argument is flawed because his evidence doesn’t support his conclusion. Just because there’s no “manic-depression gene” doesn’t mean that people can’t be genetically predisposed to manic-depression. Wirth assumes there’s only one possible cause of genetic predisposition, but other factors, like multiple genes interacting, could also be involved.
21.
The point at issue between █████ ███ █████ ██ ███████
a
efforts to identify █ ████ ██ ███ ██ ███████ █████ ███████████ ███ ████████████ ██████ ██ ████████████████ ████ ███ ██████
b
it is likely ████ ███████████ ████ ████ ██ ████ ██ ████ █ ██████ ████ ████ ███████████ ██████ ██ ████████████████
c
nearly all researchers ███ █████ ████ █████ ██ ██ ████████████████ ████
d
current research supports ███ █████ ████ ██ ███ ██ ███████████ ███████████ ██ ████████████████
e
the efforts made ██ ████ █ ████ ████ ███ ███████ █ ██████████████ ██ ████████████████ ████ ████████