4.5 Selective Breeding

What is selective breeding?

• Breeding the best plants or animals together to get better offspring

• Breeding random plants or animals together

• Breeding only animals for better traits

• Breeding only plants for better traits

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How long have humans been using selective breeding?

• For a few years

• For decades

• For hundreds of years

• For thousands of years

What is another term for agriculture?

• Horticulture

• Breeding

• Botany

• Farming

Which of the following is NOT a reason for selective breeding?

• To make plants grow slower

• To create crops resistant to diseases

• To breed friendly pets

• To produce cows that give more milk

What is the first step in selective breeding?

• Selecting individuals with desired characteristics

• Breeding random individuals

• Harvesting the crops

• Feeding the animals

What is the goal of breeding selected individuals together?

• To get more offspring

• To get identical offspring

• To get better offspring

• To get fewer offspring

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What is a gene pool?

• A collection of all plants in a field

• A collection of all animals in a farm

• The collection of all different alleles in a population

• A pool where genes swim

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What happens to the gene pool during selective breeding?

• It stays the same

• It gets larger

• It gets smaller

• It disappears

What is a potential drawback of selective breeding?

• Inbreeding

• Faster growth

• Increased gene pool

• More genetic diversity

Why are some dog breeds prone to health conditions?

• Because they are wild

• Because they are not selectively bred

• Due to a large gene pool

• Due to a small gene pool

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