Artificial Selection

Artificial Selection

Humans choosing what traits to pass down

Natural selection

Traits that are passed down naturally.

Occurs due to survivability of organisms.

Traits that don't help organisms survive die off.

Artificial Selection

Does not occur naturally.

Humans influence or choose what traits are passed down to offspring.

3 types can occur:

• Selective breeding

• Inbreeding

• Hybridization

Artificial Selection

Selective breeding- organisms with desirable traits are made to reproduce to enhance or ensure the traits are passed down.

Inbreeding- This occurs when humans make offspring reproduce to enforce the desired trait. When the same population of an organism are bred together, more offspring will get recessive genes that cause disease or deformity.

Hybridization- breeding organisms with different desired traits to create offspring with both traits

Multiple Choice

A farmer buys a bull that grows really large very quickly to breed with his cows so their offspring can produce more meat. Which type of artificial selection is this?

• Selective breeding

• Inbreeding

• Hybridization

Multiple Choice

A dog breeder has a dog that doesn't shed a lot of fur and another dog that is very friendly. The dog breeder breeds the two dogs to create offspring that are great for families. Which type of artificial selection is this?

• Selective breeding

• Inbreeding

• Hybridization

Multiple Choice

Pugs used to have longer snouts but due to pure breeding they tend to have shorter noses and difficulty breathing. This is an example of which type of artificial selection?

• Selective breeding

• Inbreeding

• Hybridization

DOG BREEDS ARE THE
RESULT OF ARTIFICIAL
SELECTION

◼Labrador Retrievers

◼Webbed toes

◼Very Intelligent

◼High Energy

◼Strong Tail (rudder)

◼Soft Grip

◼What is their job?

DOG BREEDS ARE THE
RESULT OF ARTIFICIAL
SELECTION

◼Belgian Malinois

◼High Energy

◼Fast

◼Strong

◼Sharp Hearing

◼Protective

◼What is their job?

DOG BREEDS ARE THE RESULT OF
ARTIFICIAL SELECTION

◼King Charles Spaniel

◼Small

◼Affectionate

◼Long Fur

◼Quiet

◼Loyal

◼What is their job?

DOG BREEDS ARE THE RESULT OF
ARTIFICIAL SELECTION

◼Chihuahua

◼Small

◼LOUD

◼Love small spaces

◼Protective

◼Ferocious

◼Territorial

◼What is their job?

WHAT ARE SOME OTHER ANIMALS HUMANS HAVE
SELECTIVELY BRED TO MEET OUR NEEDS?

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