Explain why mutations are almost always neutral or harmful. What will be an ideal response?
ANSWER: Concepts to Consider: Mutations are changes in the genetic material that then result in
changes in the resulting proteins; if the change is substantial, then the mutation will be
harmful, as the protein will be nonfunctional
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Which component of plasma constitutes antibodies?
a. albumin b. dissolved gases c. fibrinogen d. hormones e. immunoglobulins
A fragment cut out of DNA and a plasmid cut open for insertion of the fragment must both have been
cut with the same type of restriction enzyme. Indicate whether the statement is true or false.
________ is a hormone secreted by the cells in the stomach lining that functions to increase release of gastric juices
Fill in the blank(s) with correct word
Most density-dependent factors show negative feedback relative to population size. Which one of the following is more likely to show positive feedback relative to population size?
A. mortality in large populations B. competition in small populations C. competition in large populations D. fecundity in small populations E. fecundity in large populations