All of the Following Are Components of Darwin's Principle of Natural

question 77

Multiple Choice

All of the following are components of Darwin's principle of natural selection EXCEPT that

• A) new alleles are constantly produced through mutation.
• B) populations exhibit great variation.
• C) organisms produce more offspring than can be sustained by the environment.
• D) over time, adaptive phenotypes increase in frequency within a population.
• E) variation can be inherited.

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Definitions:

MRI

Magnetic Resonance Imaging; a medical imaging technique used to visualize internal structures of the body in detail using magnetic fields and radio waves.

PET

Positron Emission Tomography, a type of imaging test that allows doctors to check for diseases in the body by using a special dye containing radioactive tracers.

fMRI

Functional Magnetic Resonance Imaging, a neuroimaging technique that measures brain activity by detecting changes associated with blood flow.

Control Groups

Groups in experiments that do not receive the experimental treatment, allowing researchers to assess the treatment's effect by comparing it against this baseline.