Which of the following is useful in biological systematics?
A. Epidemiology
B. Physiology
C. Ecology
D. All of the choices are correct.
Answer: D
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To create a mouse model of the human disease Hemophilia A, in which a nonfunctional factor VIII protein results in a blood clotting deficiency, _____
a. a cloned mutant FVIII gene is inserted into fertilized mouse eggs, which are then transferred to a foster mother for gestation and birth b. a cloned normal FVIII gene is inserted into fertilized mouse eggs, which are then transferred to a foster mother for gestation and birth c. mice with similar, naturally occurring, clotting deficiencies are cloned d. embryonic stem cells are harvested from mouse blastocysts, and grown in the lab to produce blood cells for experimental research e. adult mice are infected with bacteria that contain a copy of a mutant human FVIII gene
During DNA replication, which enzyme assembles the new DNA strands?
a. DNA polymerase b. RNA polymerase c. DNA replicase d. DNA helicase e. DNA-RNA synthase
Arnold was involved in a major traffic accident, and some of the nerves in his spinal cord were cut. What are his chances for a full recovery? Please explain your answer
What will be an ideal response?
An increase in the number of chromosomes present in an organism is known as
A. polyploidy. B. gene flow. C. convergent evolution. D. punctuated equilibrium.