Artificial Selection
What is a down side to this?
It decreases diversity in traits
True or False: Natural selection is done by a human
False
How long ago was it done?
10,000 years ago
Which one takes longer?
Artificial selection
What is artificial selection?
It is where people breed animals with specific traits to make organisms with desireable traits
What is Natural Selection?
Where nature decides which animals breed
Why was it originally used?
So that people did not have to go around to get food and so that they could breed animals to have better traits for them
Selective breeding is another word for___.
Artificial Selection
What are some good things about it?
1. It can make it so people can
What is the result of natural selection?
Organisms with a variety of traits
Why did people do artificial selection with oxen and horses?
So they were stronger for ploughing and transportation
What is the difference?
Natural selection is where nature decides which animals breed. Artificial selection is where people decide which animals breed.
What does it result in?
Organisms with more desirable traits?
What is a down side about it?
You can get organisms with unwanted traits
Of the following, what is not an example of natural selection:
1. 2 animals breed together in a zoo on their own
2. 2 animals with likable traits breed on their own
3. 2 animals with likable traits get bred by people that chose those animals
Number 3: 2 animals with likable traits get bred by people that chose those animals
How does it work?
People breed 2 organisms with more convenient/likeable traits
Is the following an example of artificial selection or natural selection:
Two animals that were just rescued are in a zoo now. They reproduced and got offspring with a variety of traits.
Natural selection