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

All of the following statements are reasons for selective breeding except:

• To produce offspring with desirable characteristics
• Farmers increase their profit by improving crops
• To improve the quality of food products
• To increase migration patterns

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Where humans have bred organisms together based on traits we like.

• Evolution
• Natural Selection
• Extinction 
• Artificial Selection

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The evolution of dogs from wolves is due to:

• Natural Selection
• Sexual Selection
• Artificial Selection
• Vestigial Structures

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Which of the following best represents inbreeding?

• removing DNA from an organism

• changing traits based on environment

• crossing 2 similiar animals

• crossing 2 different animals

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What is inbreeding?

• two sets of genes
• every trait called alleles
• reproduction from mating of two genetically related parents 
• combination of parental genes

Crossing a red sweet apple with a large disease resistant apple is an example of ________________.

• inbreeding

• cloning

• natural selection

• hybridization

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Sean is studying the advantages of selective breeding in plants. He made the following list of possible advantages:

1) Can produce corn that attracts grasshoppers

2) Can develop grass that can grow with less water

3) Can develop wheat that can grow in different types of soil

4) Can produce oranges that are not affected by freezing temperatures

Which items on the list provide logical arguments in favor of selective breeding?

• 1,2,3

• 2,3,4

• 2,4

• 3,4

Which statement explains how a population’s genetic variability and diversity can be affected by selective breeding?

• Genetic variability and diversity decrease because only select individuals are bred.

• Genetic variability and diversity increase because only select individuals are bred.

• Genetic variability increases and diversity decreases because only select individuals are bred.

• Genetic variability decreases and diversity increases because only select individuals are bred.

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