It is difficult to assign a precise phenotypic definition to alcoholism because _____
a. not enough volunteers agree to participate in genome wide association studies
b. alcoholism does not have environmental components
c. alcoholism is an innate behavior
d. genetic testing for alcoholism is not available
e. excessive consumption of alcohol is subjective
e
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Answer the question using the accompanying figure. Identify the developmental brain region that gives rise to the
a. hindbrain b. midbrain c. telencephalon d. medulla e. forebrain
Synthesis of an inducible enzyme requires
A. substrate bound to promoter. B. substrate bound to repressor. C. repressor alone bound to operator. D. corepressor and repressor binding to operator.
Match the microbe with an example of its importance to humans.
A. This group includes beneficial microorganisms that fix nitrogen, make antibiotics, vitamins and enzymes, as well as harmful microorganisms that cause disease such as plague and strep throat. B. Members of this group have caused "mad cow disease" and Creutzfeld Jacob disease. C. Members of this group include decomposers, associate with plant roots and help plants grow, produce antibiotics, help bread rise, and help make wine. D. Members of this microbial group cause serious diseases such as smallpox, AIDS, and Ebola fever. E. Members of this group are photosynthetic, include unicellular and multicellular forms, and are the foundation of aquatic food chains.
Germline engineering would
a. alter a cloned embryo's genetic makeup. b. replace defective genes. c. insert missing genes. d. modify damaged genes. e. all of these.