Evolution Flashcards

1
Q

Explain mutations

A

Some harmful or life threatening

Some beneficial and allow evolution to occur

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2
Q

Define Natural selection

A

Select best adapted individuals

Survival of fittest

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3
Q

If species separate what happens

A

Evolution can occur

Example - continental drift

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4
Q

How to identity same species

A

If they can reproduce

Fertile offspring

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5
Q

How evolution can be proved

A

Fossil records
Comparing embryos
Comparing limbs or skeletal structure
Geographical distribution

Suggest common ancestor or all related !!

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6
Q

Define speciation and steps involved

A

Process that leads to creation of new species

Step one - population and variation exists
Step two - separation of population
Step three - each population experience different environmental conditions

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7
Q

Define artificial selection

A

Humans select phenotypes

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8
Q

Who discovered evolution

A

Charles Darwin

Alfred Wallace

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9
Q

What is evolution

A

Change in the heritable traits within a population across generations

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10
Q

Why does evolution occur

A

Due to mutations

Combination of genetics and environmental factors determine characteristics

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