If you were diagnosing a case of infertility in a male patient, and you found that his sperm failed to swim as a result of inactivation, you would diagnose a problem in the
A. bulbourethral gland.
B. seminal vesicle.
C. prostate gland.
D. vas deferens.
E. epididymis.
C. prostate gland.
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The production of pollen, seeds, and flowers attributed to the widespread distribution of angiosperms. Why is the production of seeds an advantage?
A. It allows fertilization in the absence of water. B. It protects and nourishes the embryo. C. It promotes pollination. D. It allows fertilization in moist areas. E. It is necessary for sexual reproduction.
Proteins that regulate gene expression by directly binding to the DNA are known as _____
a. transcription factors b. translation factors c. transposable elements d. methylation e. phosphorylation
What happens after a subthreshold depolarization?
a) a reversal of the direction of the neural impulse b) a full action potential c) a partial action potential d) no action potential e) a proportional action potential
dCas9 is a useful tool in the CRISPER-Cas toolkit because it can ________
A) fluoresce and help researchers locate target sequences B) deactivate the transcription of a gene C) bind DNA, but it cannot travel down the template strand D) bind DNA, but it cannot cut DNA