Selective Breeding

The purpose of selective breeding is to 

• Get bigger animals
• get smaller animals
• create animals with desirable traits
• create animals with bad traits

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It is very common for yellow labs to have bad hips. This is because owners want purebred yellow labs who are good hunting dogs. This is an example of

• Natural Selection

• Inbreeding

• Hybridization

• Fossil Record

A farmer has bred his pineapple plants from the sweetest pineapples from his last harvest to get even sweeter pineapple plants. What is this an example of?

• Selective breeding
• Natural selection
• Extinction
• Mutagenesis

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Evidence shows that the wolf is the ancestor to all of the breeds of dogs shown below. How did this variation arise in a relatively short period of time?

• A.  Genetic manipulation
• Natural selection
• Random chance
• Selective breeding

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Problems with selective breeding include

• Better animals
• More Meat
• Animals can have bad health problems
• more diversity

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The figure below shows four different species of finches found on the Galapagos Islands. Each of these finches evolved from a common ancestor through natural selection. Which of these finches is best suited to pick small insects off a cactus?

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Problems with animals that are selectively bred include:

• Being more disease resistant

• Producing more meat

• Being more likely to suffer from genetic disease

• Being more genetically diverse

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Which of these would be considered an adaptation of an animal that lives in the snowy tundra?

• a thick coat
• green colored skin
• large, flat leaves
• webbed feet

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What is one of the processes involved in selective breeding?

• allowing organisms to reproduce without interference

• choosing individuals with desirable characteristics to be parents of the next generation

Which is an example of SELECTIVE BREEDING ?

(also called artificial selection)

• A giraffe’s long neck.

• Training a horse to run faster.

• Clipping a horse’s tail so it is not too long.

• Cross breeding a labrador retriever with a poodle.

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