You Learned How Freshwater Stickleback Populations Have Lost Their Body

question 37

Essay

You learned how freshwater stickleback populations have lost their body armor through positive selection of a low-armor Eda allele, which is found at low frequency in marine populations. How could you determine whether the low-armor phenotype arose once and spread throughout freshwater populations, or whether the allele was selected for independently multiple times?

---

Definitions:

Eating Disorders

Mental health disorders characterized by abnormal eating habits that negatively impact a person's physical or mental health.

Schizophrenia

is a serious mental disorder characterized by distortions in thinking, perception, emotions, language, sense of self, and behavior.

Posttraumatic Growth

Positive psychological change experienced as a result of adversity and other challenges in order to rise to a higher level of functioning.

Burnout Research

The study of chronic workplace stress and its effects on physical and emotional well-being, including exhaustion, cynicism, and feelings of reduced professional efficacy.