When growing millet, farmers choose seeds from high yielding plants.
(i) Complete the following sentence:
"When farmers choose seeds for plants with desirable characteristics, this is called..."
(1)
☐ | A | Evolution |
☐ | B | Adaptation |
☐ | C | Artificial selection |
☐ | D | Natural selection |
(ii) Suggest another characteristic of crop plants which may be chosen by farmers.
(1)
Farming methods such as those described in part (a) can lead to a reduced gene pool in a population.
(i) Give a definition of the term gene pool.
(1)
(ii) Give one reason why a reduced gene pool may have a negative affect on the population.
(1)
In order to increase the size of the gene pool, the farmer cross pollinates plants from two different populations of millet.
Suggest how this helps to increase the size of the gene pool.
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