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

• Evolution
• Natural Selection
• Extinction 
• Artificial Selection

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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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HH, DD, dd

• Heterozygous
• Hybrid
• Purebred
• Phenotype

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The physical appearance of a gene:

• Genotype
• Heredity
• Phenotype
• Allele

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The genetic make up of a trait:

• Genotype
• Phenotype
• Chromosome
• Hybrid

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A trait that will appear no matter what it is paired with is said to be:

• Recessive
• Dominant
• Hybrid

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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 How are HYBRIDIZATION and INBREEDING similar?
HINT: Selective breeding is when organisms are bred for the purpose of passing on specific or favorable traits to the next generation. Inbreeding is a type of selective breeding that crosses two organisms with similar genetic traits. Hybridization is a type of selective breeding that crosses two organisms with different genetic traits.

• Both are a form of natural selection.
• Both are a form of selective breeding.
• Both result in no change in genetic traits.
• Both involve breeding organisms with similar genetic traits.

“People identify the trait they want, then only allow animals with that trait to breed with one another.” BEST matches:

• Asexual Reproduction

• Natural Selection

• Selective Breeding