Murray Is a Child with Allergies Who Has Respiratory Attacks

question 37

Multiple Choice

Murray is a child with allergies who has respiratory attacks that make breathing very difficult. These attacks often occur at night and when his parents have had a fight. Murray is probably suffering from ____.

• A) angina pectoris
• B) asthma
• C) essential hypertension
• D) posttraumatic stress disorder

---

Definitions:

Silenced Genes

Genes that are not expressed in the phenotype due to mechanisms that prevent their transcription or translation.

Trivers-Willard Hypothesis

A theory suggesting that parents are likely to have offspring of the sex that will give them the greatest number of surviving grandchildren under certain conditions.

Sex Manipulation

Strategies or behaviors by which organisms influence the sex ratio of their offspring for evolutionary or ecological advantages.