DNA replication occurs during cytokinesis. Indicate whether the statement is true or false
F
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Most cases of generalized anaphylaxis are a result of
A. fire ant stings. B. aspirin. C. bananas. D. peanuts, bee stings, or penicillin injections.
Genetic analysis indicates that North America was originally populated by three or four different
waves of immigrants who A. all came from Asia. B. came from Asia and Europe. C. came from Asia and Africa. D. all came from Africa. E. came from Africa and Europe.
Compared with prokaryotic chromosomes, eukaryotic chromosomes are ________
A) large, linear, less densely packed with protein-coding genes, mainly organized in single-gene units with introns B) small, mainly organized in polygenic transcription units without introns C) large, mainly organized in polygenic transcription units without introns D) small, mainly organized in-single gene transcription units with introns E) large, mainly organized in single-gene transcription units without introns
When a species is introduced into a habitat that is not its natural ecosystem, the species could become "invasive." Which of the following is NOT a characteristic of an "invasive" species?
a) invasive species will spread very quickly through a habitat b) invasive species will outcompete the native species for resources c) invasive species are often introduced either accidentally or purposely by humans d) invasive species never have negative effects on a new habitat's biodiversity e) invasive species can lead to the extinction of other native species