Practice Questions

1.What is meant by selective breeding?

The process where humans choose plants or animals with desired characteristics and breed them together so those traits appear in the offspring.

2.Describe the process of selective breeding.

Individuals with desirable characteristics are selected from a population.
They are bred together.
From the offspring, those with the desired characteristics are selected and bred again.
This process is repeated over many generations until most individuals show the desired characteristic.

3.The diagram above shows selective breeding in dogs. Explain how the dogs with a gentle temperament become more common over time.

Dogs with a gentle temperament are selected by humans as parents.
These dogs are bred together.
Their offspring are more likely to inherit the allele for gentle temperament.
The gentlest offspring are then selected and bred again.
Over many generations, the number of dogs with a gentle temperament increases.