Evolution in a population of island iguanas can be caused by the following agent(s):
A) Natural selection
B) Genetic drift
C) Gene flow
D) All of the above.
E) Both natural selection and genetic drift.
Answer: D
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The number of European rabbits in Australia is
currently controlled by a. two viruses. b. a 2,000-mile-long fence. c. pesticide application to grasslands. d. toxic species of grasses. e. fumigation and destruction of their burrows.
Bioinformatics provides database information to align proteins from novel sequences with known proteins. If a new amino acid sequence does not match an existing sequence ________.
A. it is called an paralogue; the DNA that codes the ORF does not match any other organism in the database and the function is not known B. it is called an orthologue; the DNA that codes the ORF does not match any other organism in the database and the function is not known C. it is either a conserved hypothetical protein, i.e., the DNA matches genes in the database but they have no known function, or it is a protein of unknown function; the genes are unique to that organism D. it is either a protein of unknown function, i.e., the DNA matches genes in the database but they have no known function, or it is a conserved hypothetical protein; the genes are unique to that organism
Define paedomorphosis and allometric growth, and briefly explain how each contributes to the process of
macroevolution. What will be an ideal response?
Which of the following bacteria can cause life-threatening pseudomembranous colitis?
A) Clostridium difficile B) Staphylococcus aureus C) Streptococcus pyogenes D) Enterococcus species E) Clostridium botulinum