Suppose that a genetics researcher concludes that the probability of obtaining a double dominant phenotype in an F2 cross is 9/16. This conclusion can be valid only if one or more assumptions are true. Which of the following is a necessary assumption?
A: Alleles have an equal probability of separating into gametes.
B: The two genes assort independently.
C: The sample size is small.
D: Both a and b
E: Both b and c
Answer: D: Both a and b
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Researchers are interested in the genomes of prokaryotic species for all of the following reasons EXCEPT
A. bacteria cause many diseases that affect people, plants, and animals. B. bacteria reveal modes of infection. C. bacteria are more complex than humans. D. the origin of the first eukaryotic cell probably involved a union between an archaeal and a bacterial cell. E. All of the choices are reasons for studying genomes of prokaryotic species.
The ____ cycle is a sedimentary cycle
a. carbon b. water c. nitrogen d. phosphorus e. atmospheric
Which of the following is NOT produced by an animal muscle cell operating under anaerobic conditions?
a. heat b. pyruvate c. NAD+ d. ATP e. lactate f. all are produced