BiologyOct12th2006

BiologyOct12th2006 - animals to produce offspring with...

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Dustin Lee 10/12/2006 Biology Block C 1. Darwin recognized that all species tend to produce excessive numbers of offspring. But in nature, resources are limited, the production of more individuals than the environment can support leads to a struggle for existence among the individuals of a population. 2. The goal of artificial selection is to selectively breed domesticated plants and
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Unformatted text preview: animals to produce offspring with genetic traits that humans value. 3. Early results kill 99 percent of the insects. But later sprayings are less and less effective because the ones that are resistant to the poison to start with survive. Then they pass on their genes to their offspring, which they pass on to their offspring etc....
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