Rats Previously Exposed to a Tone Followed by a Brief

question 73

Multiple Choice

Rats previously exposed to a tone followed by a brief electrical shock will show ________ when subsequently exposed to the tone (without shock) .

• A) grooming behavior
• B) reduced fear
• C) reduced plasma levels of stress hormones
• D) behavioral arrest (freezing)
• E) an unconditional emotional response

Comprehend the significance of the X and Y chromosomes in determining genetic traits.

Grasp the principles of dominant and recessive alleles and their impact on inheritance.

Understand the multifactorial nature of gene expression, including the influence of the environment on genetics.

Explain the concept of polygenicity and its relevance to human traits.

---

Definitions:

P-Value

The probability of obtaining test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is true.

P-Value

The probability of observing a test statistic at least as extreme as the one observed, under the assumption that the null hypothesis is true.

Level of Significance

The probability of rejecting the null hypothesis when it is actually true, used as a threshold in hypothesis testing.

Test Statistic

A calculated value from a data sample used to test a hypothesis against some criteria.