The Simplest Behavior, in Which a Stimulus Provokes an Automatic

question 40

Multiple Choice

The simplest behavior, in which a stimulus provokes an automatic response, is called a

• A) ​reflex arc.
• B) ​neurilemma.
• C) ​cranial arc.
• D) ​habitual response.

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Definitions:

Dominant Gene

A dominant gene is an allele that expresses its phenotype even in the presence of another allele, effectively masking the effects of a recessive allele.

Recessive Gene

An allele that produces its characteristic phenotype only when its paired allele is identical, otherwise being masked by the effects of a dominant gene.

Frequency

The number of occurrences of a repeating event per unit of time.

Bottleneck Effect

Type of genetic drift; occurs when a majority of genotypes are prevented from participating in the production of the next generation as a result of a natural disaster or human interference.