The Role of Rats in Scientific Research

Rats have played a crucial role in scientific research for nearly 200 years, although they have been surpassed by mice in recent decades. The Norwegian brown rat, or Rattus Norvegicus, became a key research animal due to its rapid growth and ease of breeding. Albino rats were first used in labs, leading to the development of standardized strains like the Wistar rat. Despite the rise of mice, rats remain vital for studying complex diseases due to their genetic similarities to humans. The video highlights the importance of rats in research and contrasts their scientific value with their historical use in sport.

What role have rats played in scientific research over the past 200 years?

• They have been used as pets.

• They have been central to scientific research.

• They have been used primarily for food.

• They have been used in animated movies.

Which animal has surpassed rats as the most widely used in scientific research over the past 20 years?

• Cats

• Dogs

• Mice

• Birds

Where did the Norwegian brown rat most likely originate?

• Eastern Africa

• Northern China

• Southern India

• Western Europe

What was the purpose of rat bathing in the 18th century?

• To train rats for scientific research

• To clean the rats

• To use rats in a sport involving terriers

• To breed rats for food

Why were albino rats initially used in laboratories?

• They were larger in size.

• They were cheaper to maintain.

• They were easier to distinguish.

• They were more aggressive.

What was the significance of the Wistar rat in scientific research?

• It was the first rat to be domesticated.

• It was the first rat used in animated movies.

• It was the first rat bred solely for scientific research.

• It was the first rat used in sports.

How many generations can rats be inbred while maintaining genetic similarity?

• Up to 100 generations

• Up to 200 generations

• Up to 400 generations

• Up to 300 generations

Why have mice become more popular than rats in genetic research?

• Mice are easier to train.

• Mice are easier to genetically modify.

• Mice are larger in size.

• Mice have a longer lifespan.

What percentage of human genes related to diseases are shared with rats?

• 85%

• 50%

• 60%

• 75%

Why are rats still important in research despite the rise of mice?

• Rats are more resistant to diseases.

• Rats are easier to breed.

• Rats have more complex brains.

• Rats are cheaper to maintain.