BIOEE 1780 Chapter Notes - Chapter 8: Brussels Sprout, Brassica Oleracea, Collard Greens
9 Dec 2016
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Humans select for increased tolerance to penning, increased sexual precocity and reduced wariness and aggression in domestic animals. In farming and pesticides, individual insects with mutations for biochemical mechanisms enabling them to survive, to somehow detoxify the chemical poison, do very well. They live, while most of their competitors do not. These survivors now have more food to eat, boosting their survival and fecundity. As they propagate themselves, they populate subsequent generations of the pest population with offspring who are also resistant to the pesticide, and alleles conferring resistance spread. The large size of insect populations can produce substantial genetic variation. When the intense selection of pesticides is applied to the insects, resistance can evolve rapidly. Farmers often have to apply more of a pesticide to control resistant pests; farmers in the. Hunting and fishing have an evolutionary effect that"s the opposite of domestication. Farmers select individual plants to breed because they have desirable traits.
