Answer:
Mutation, forms entirely new alleles, the other answer choices change preexisting allele distribution within the population.
<span>Learning to exert conscious voluntary control over automatic body functions such as respiration, heartbeat, and skin temperature is called gate control.
</span><span>The gate control theory explains why thoughts and emotions influence pain perception.
</span>It suggests that the spinal cord contains a neurological 'gate' that controls pain signals to the brain.
When two different organisms exhibit a similarity in the pattern of embryological development, it is an indication that the two organisms have descended from a common ancestor. Similarity in embryological development is accepted by biologists as further evidence of common ancestry to back up evidence obtained from fossil finds.
The answer to your question is B.