Use This Information to Answer the Following Questions

question 9

Multiple Choice

Use this information to answer the following questions.
A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (aa) , the same percentage as at the beginning of the breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants.
-What proportion of the population is probably heterozygous (Aa) for this trait?

• A) 0.05
• B) 0.25
• C) 0.50
• D) 0.75

---

Definitions:

Anorexia Nervosa

A serious mental health disorder characterized by an intense fear of gaining weight, a distorted body image, and severe restriction of food intake leading to significant weight loss.

Lack Of Sleep

The condition of not getting enough rest, which can lead to a range of physical and psychological health issues, including impaired cognitive function and mood disorders.

Anxiety

A feeling of worry, nervousness, or unease about something with an uncertain outcome, often reflecting a concern about future events.

First Ejaculation

The first occurrence of semen being ejected from the body, marking a milestone in male sexual development.