Crossing over is important for ________.
increasing genetic variability
preventing mutations
limiting genetic recombination
maintaining chromosome structure
increasing genetic variability
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Variations in respiratory rate is a symptom of
A. sinus arrhythmia. B. SA node block. C. paroxysmal atrial tachycardia D. ventricular tachycardia.
According to Boyle's law, the pressure exerted by a constant number of gas molecules in a container is inversely proportional to the volume of the container. Therefore, increasing the volume of the container will cause a decrease in its pressure
Indicate whether the statement is true or false.
If a 10% sucrose solution is separated from a 20% sucrose solution by a membrane permeable to sucrose, in which direction will net diffusion of sucrose take place?
A) from the 10% sucrose solution to the 20% sucrose solution and from the 20% sucrose solution B) from the 10% sucrose solution to the 20% sucrose solution C) neither from the 10% sucrose solution to the 20% sucrose solution nor from the 20% sucrose solution to the 10% sucrose solution D) from the 20% sucrose solution to the 10% sucrose solution E) There will be no diffusion in this case.
When the ductus deferens fuses with the base of the seminal gland, it forms (the)
A) deferential duct. B) prostatic urethra. C) ejaculatory duct. D) seminiferous tubules. E) None of the answers are correct.