Modern advances in _________ have provided important insights into the evolutionary history of life on Earth.
A. research on human subjects
B. technology
C. dog breeding
D. constructing evolutionary trees
Technology
B. technology
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Clown fishes form symbiotic relationships with members of this group of cnidarians:
a. siphonophores. b. hydrozoans. c. anthozoans. d. scyphozoans. e. bryozoans.
The current status of gene therapy is:
a. it is currently being used effectively to cure cystic fibrosis. b. it has been terminated because clinical trials have shown that it is ineffective. c. it is being evaluated to assess the risks associated with potential side effects. d. the number of clinical trials is increasing at an almost uncontrolled rate. e. that it may be considered in the future, but currently the technology is not available.
Which one of the following statements about horizontal gene transfer is false?
A. Horizontal gene transfer involves hitchhiking genes from other species. B. Horizontal gene transfer is also called lateral gene transfer. C. Horizontal gene transfer was common early in life, but is absent today. D. Gene swapping is evident in the human genome. E. The products of horizontal gene transfer often exist as transposons.
Which of the following does not affect microbial growth