Which of the following processes within viral replication is the greatest source of genetic variation in RNA virus populations?
A) High mutation rate due to lack of proofreading of RNA genome replication errors.
B) Transcription from the host cell RNA polymerase introduces numerous mutations.
C) Capsid proteins from the host cell can replace the viral capsid.
D) Viral RNA is translated by host cell ribosomes.
A
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The __________ transition model predicts the effect
that economic development has on human population growth. a. preindustrial b. transitional c. demographic d. postindustrial e. pretransitional
The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5' to 3" and makes a new DNA strand from 3' to 5'.
a. true b. false
Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely _____
A) an animal cell in the process of cytokinesis B) a plant cell in the process of cytokinesis C) an animal cell in the S phase of the cell cycle D) a plant cell in metaphase
An important message from the work of Thomas Malthus that influenced Charles Darwin was
A. animals tended toward "human perfection." B. only a fraction of any population will survive and reproduce. C. population size of humans can only increase linearly. D. inheritance of acquired characteristics. E. none of these. Charles Darwin was influenced by John Ray not Thomas Malthus.