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Selective breeding - Artificial selection





Selective breeding is the traditional method for improving crops and livestock, such as increasing disease resistance or milk yield. [1]

The processs

• Decide and choose the most desirable animal

• Choose parents that may show these desired characteristics and have them breed

• Pick offspring that shows the best results and have it produce the next generation

• Repeat the process for multiple generations until you aquire the 'perfect specimen'

REMEMBER: Selective breeding is not exclusive to animals, it may also occur between plants.




• Breeders may achieve higher amounts of profits through the process of selective breeding. (e.g. a farmer may breed a cow to produce more milk so that the farmer can sell more milk per cow)

•Better flowers - choosing the biggest and most colourful flowers

• Better wool/leather - The finer the wool or leather (or any other products aquired from the animal ), the more money the farmer will make


• Due to the fact that the same animals are being bred, the same genes pass down and therefore may result in a very small gene pool

• If a deadly disease were to come along, it is likely that many of breeded animals would catch the disease because they all share very similar DNA and genes

The difference

-Natural selection and selective breeding can both cause changes in animals and plants

-The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene

-For this reason selective breeding is sometimes called artificial selection

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