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Selective Breeding Worksheet

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Selective Breeding Worksheet

Various dog breeds showing selective breeding results

🧬 Part 1: Understanding Selective Breeding

1. What is selective breeding?

When animals choose their own mates in the wild

When humans choose parents with desired traits to breed

When plants grow naturally without human help

When traits change randomly over time

2. Which of these are examples of selective breeding? (Check all that apply)

Breeding sheep with thicker wool

Lions hunting in the wild

Growing corn with larger kernels

Training a dog to sit

Breeding horses for speed

3. How is selective breeding different from natural selection?

Selective breeding involves human choices, natural selection involves environmental pressures

Selective breeding is faster than natural selection

There is no difference between them

Natural selection only happens in plants

4. Fill in the blank: In selective breeding, humans choose _____________ with desired traits to produce offspring that are more likely to have those same traits.

Answer: _________________________

🐕 Part 2: Real-World Examples

5. A farmer wants to grow tomatoes that are larger and more resistant to disease. Explain how the farmer could use selective breeding to achieve this goal.
6. Match each dog breed trait with the reason humans might have selected for it:
A. Long, thin legs
B. Thick, waterproof coat
C. Small size
D. Strong bite
1. Swimming and water rescue
2. Fitting in small living spaces
3. Running fast to hunt
4. Protecting property
7. What might happen if selective breeding is not managed carefully? Give one example.

🤔 Part 3: Critical Thinking

8. You are a plant breeder trying to create a new type of apple. What three traits would you want to select for, and why?
9. True or False: Selective breeding can sometimes lead to health problems in animals.

True

False

Explain your answer: ________________________________________________

10. Create a scientific question about selective breeding that you would like to investigate further.

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