Life on Earth

Thinking about humans, can you think of 3 examples of genetic and 5 examples of environmental variation?

Genetic Environmental1. 1.

2. 2.

3. 3.

A species is a group of organisms that…

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Over 98% of human genes are the same as those of a chimpanzee, but only 85% are the same as a mouse.

Selective breeding involves selecting organisms with desirable characteristics and breeding them together. Next – selecting the offspring that display these desirable characteristics and breeding them further.

Which organisms are commonly used for breeding?

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How does natural selection differ from selective breeding?

Natural selection Selective breeding

Plants and animals of one species are in competition for resources. What are these resources?

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Sometimes when DNA is copied a mistake is made. What is the scientific name given to this?

Hormone system

Nervous system

Speed of response?Chemical or electrical?Carried through blood or nerve cells (neurones)?

Human beings have 2 main differences from apes – what are they?1. __________________________2. __________________________