Analytic epidemiological studies aim to investigate and identify factors associated with the …
Analytic epidemiological studies aim to investigate and identify factors associated with the presence of disease within populations, through the investigation of factors which may vary between individual members of these populations. Details on study designs appropriate for these investigations are given elsewhere. Conceptually, this involves investigating the disease experience amongst different 'groups' of animals within an overall population, distinguished according to the factor(s) of interest. These factors can be classified as one of the components of the 'epidemiological triad' of Host, Agent and Environment, many of which are closely interrelated with each other.
Biology 2e is designed to cover the scope and sequence requirements of a …
Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.
By the end of this section, you will be able to do …
By the end of this section, you will be able to do the following:
List the steps of replication and explain what occurs at each step Describe the lytic and lysogenic cycles of virus replication Explain the transmission of plant and animal viruses Discuss some of the diseases caused by plant and animal viruses Discuss the economic impact of plant and animal viruses
By the end of this section, you will be able to do …
By the end of this section, you will be able to do the following:
Discuss the predator-prey cycle Give examples of defenses against predation and herbivory Describe the competitive exclusion principle Give examples of symbiotic relationships between species Describe community structure and succession
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