Evolution Flashcards

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0
Q

Inheritance of acquired characteristics

A
Characteristics of individuals change during their own lifetime 
The changed (acquired) characteristics are passed on to the next generation
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1
Q

Micropropagation (tissue culture)

A

A way in which very small pieces of plants can be grown to produce commercial quantities of identical plants (clones) with desirable characteristics

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2
Q

Evidence for Lamarck

A

Changes in individuals can be acquired over time

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3
Q

Evidence against Lamarck

A

These acquired characteristics are not passed on

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4
Q

Natural selection

A

The mechanism of evolution

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5
Q

How does natural selection work? 3 step plan

A

1) the environment ‘selects’ from already existing variations the ones that are best suited for a particular environment
2) these survive and breed & pass on their genes
3) more offspring with these characteristics are produced

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6
Q

Where does the variation come from?

A

Mutations in genes

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7
Q

Observed micro evolution

A

Small scale changes within species leading to new subspecies

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8
Q

Fossils

A

Mineralised or otherwise preserved remains of animals, plants and other organisms

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9
Q

Most common way for fossils to be formed

A

Harder parts of animal/plant are replaced by minerals over a long period of time

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10
Q

Extinction

A

The permanent loss of all the members of a species from the earth

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11
Q

Mass extinction

A

Loss of a number of species at the same time

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12
Q

The theory of evolution

A

All the species which are alive today -and many more which are now extinct-
Evolved from simple life forms, which first developed more than 3 billion years ago

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13
Q

Darwin’s theory

A

Evolution takes place through natural selection

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