Tinkering with Inheritance

15
Tinkering with Inheritance By: Emily Donnelly, Michael Benko and Emily Werfel

description

Tinkering with Inheritance . By: Emily Donnelly, Michael Benko and Emily Werfel. Selective Breeding. Selective breeding is the process of breeding plants and animals with each-other for particular genetic traits in their offspring. - PowerPoint PPT Presentation

Transcript of Tinkering with Inheritance

Page 1: Tinkering with Inheritance

Tinkering with Inheritance

By: Emily Donnelly, Michael Benko and Emily Werfel

Page 2: Tinkering with Inheritance

Selective Breeding• Selective breeding is the process

of breeding plants and animals with each-other for particular genetic traits in their offspring.

NOTE: Offspring that are produced by 2 different types of an animal are often referred to as a “mutt” or “mongrel”.

Page 3: Tinkering with Inheritance

How it works

This is a diagram showing how when a wolf selectively breeds with another dog (such as a hound), they create a different mixed breed in their offspring.

Page 4: Tinkering with Inheritance

Pros and Cons of Selective Breeding

Pros: • You have

control over what traits you want.

• You can select the type of species you want to breed.

• You can get rid of certain traits.

Cons: • It is not the

natural way of breeding

• It is not the natural traits you would get from your parents.

This is a “morkie”, a mix between a yorkie and maltase.

Page 5: Tinkering with Inheritance

Examples of Organisms Produced by Selective Breeding

• Black Lab/Saint Bernard Mix (Dog)• Boston Terrier/Jack Russell Terrier (Dog)• Greyhound/Beagle Mix (Dog)

Black Lab/Saint Bernard Mix (Dog)

Boston Terrier/Jack Russell Terrier (Dog)

Greyhound/Beagle Mix (Dog)

Page 6: Tinkering with Inheritance

InbreedingThe mating of individuals to create offspring that are closely related or of the same family which tends to increase the number of individuals that are born with homozygous genes (AA or BB).

Page 7: Tinkering with Inheritance

How it works

When 2 parents (sometimes can be siblings, cousins, etc.) of the same breed or family mate, they create more of the same species or breed.

(In this case, 2 golden retrievers produced 2 more golden retrievers)

Page 8: Tinkering with Inheritance

Pros and Cons of InbreedingPros: • The parents can

continue on the same breed as long as their kids reproduce or the parents continue to reproduce.

• The species type will NEVER be mixed with another species.

Cons: • There will be no

species variation.• The genes in each

organism will be very similar to each-other

• There are often mutations present in the offspring of parents who inbreed.

Page 9: Tinkering with Inheritance

Examples of Organisms Produced by Inbreeding

• Golden Retriever (Dog)• Jack Russell (Dog)• Beagle (Dog)

Golden Retriever (Dog)

Jack Russell (Dog)

Beagle (Dog)

Page 10: Tinkering with Inheritance

Hybridization

An organism created by 2 or more parents to create a new living thing with different traits than once present.

Page 11: Tinkering with Inheritance

How it Works

This shows how A and R parents can have offspring with new traits, or a combination of traits (represented by AR).

Page 12: Tinkering with Inheritance

Pros and Cons of Hybridization

Pros: • New traits can be

created in offspring.

• There is a decreased risk for mutation

Cons: • Some traits will not be

similar to either parent• Offspring may not

resemble their parents.

When a schnauzer and a poodle mate…….

They create a “scnoodle”

Page 13: Tinkering with Inheritance

Examples of Organisms Created By Hybridization

Schnoodle American French bull terrier Australian Terrier

Page 15: Tinkering with Inheritance

THANKS FOR WATCHING! *woof*