The Impact of Selective Breeding on Plants and Animals

The video introduces selective breeding, a process where humans breed animals and plants to develop specific traits. It explains the method using cows for milk production as an example and highlights historical and modern examples like dogs and corn. The video also discusses potential downsides, such as the fragility of racehorses. It concludes with a call to action to subscribe for more educational content.

What is the primary goal of selective breeding?

• To eliminate all diseases

• To develop specific traits

• To create new species

• To increase genetic diversity

In the example of cows, what is the first step in the selective breeding process?

• Select cows based on size

• Choose cows randomly

• Find cows that produce the most milk

• Allow all cows to reproduce

What is the key to successful selective breeding?

• Allowing natural selection

• Identifying and breeding specific traits

• Increasing genetic mutations

• Breeding randomly

Which ancient civilization is known to have practiced selective breeding?

• Chinese

• Greeks

• Romans

• Egyptians

How has selective breeding affected the size range of dog breeds?

• Dogs have a wide range of sizes

• Dogs have become larger

• All dogs are now the same size

• Dogs have become smaller

What is a key feature of modern corn compared to its ancestor?

• It is smaller

• It looks very different

• It is less nutritious

• It is more colorful

What is the result of selective breeding in carrots?

• They are smaller

• They have become less nutritious

• They have a variety of colors

• They are all orange

What is a potential negative outcome of selective breeding in racehorses?

• Longer lifespan

• Greater fragility

• Increased speed

• Stronger bones

What is the main focus of selective breeding in thoroughbred racehorses?

• Increasing muscle mass and bone density

• Developing speed and lightness

• Enhancing intelligence

• Improving coat color

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