Discuss the difficulties in studying the genetics of human behavior traits What will be an ideal response?
ANSWER: The search for genetic factors in alcoholism illustrates the problem of selecting the proper
genetic model to analyze behavioral traits. Segregation and linkage studies indicate that there
is no single gene responsible for most cases of alcoholism. If a multifactorial model
involving a number of genes—each with a small additive effect—is invoked, the problem
becomes more complicated. How do you prove or disprove that a specific gene contributes,
say, 1% to the behavioral phenotype? At present, the only method to accomplish this would
involve studying thousands of individuals to find such effects, and at present, few large-scale
GWAS have been completed.
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Ag-Ab binding may result in
A. neutralization. B. immobilization. C. agglutination. D. opsonization. E. All of the choices are correct.
Allergy testing, which is accomplished by injecting tiny amounts of allergen into the skin and examining the injection site for a reaction, is an example of an in vitro test.
Indicate whether the statement is true or false.
Populations of Larus gulls around the North Pole show an unusual pattern of reproductive isolation. Each population is able to interbreed with its neighboring populations, but populations separated by larger geographic distances are not able to interbreed. This type of species complex is known as a:
a. ring species. b. circular species. c. contiguous species. d. linked species. e. peripatric species
Name two forms of antagonistic coevolution
What will be an ideal response?