Satellite viruses are
A. significant pathogens of plants.
B. dependent on other viruses for replication.
C. the cause of spongiform encephalopathies.
D. also called viroids.
E. All of these choices are correct.
Answer: B
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Phosphorus is required for building all of the
following EXCEPT a. amino acids. b. phospholipids c. nucleic acids d. ATP. e. DNA.
The ____________________ includes bones of the limbs, shoulders and hips. Fill in the blank(s) with the appropriate word(s)
The chi-squared statistic can best be described as
A) the standardized deviation of observed data from expected data. B) a statistically significant test. C) a statistical test used in genetics. D) a statistical test that compares observed and expected population means. E) None of these
The Pax6 gene codes for a transcription factor that initiates differentiation of cells that ultimately form the eye. Suppose that a researcher added an activator for the Pax6 gene to embryonic cells that are in the process of forming legs in Drosophila
What do you think the researcher will observe? A) Legs and eyes will develop normally. B) Legs will develop where the eyes normally develop. C) Eyes will develop where the legs normally develop.