Question

A biologist raised 100 populations of flies in a lab. At the beginning of the experiment, each population had 16 flies: 8 with plain wings and 8 with striped wings. These 16 flies reproduced to form the first generation of offspring. In each of the 100 populations, the biologist randomly chose 16 of the offspring as breeders for the next generation. She repeated this process for 20 generations. At the end of the experiment, half of the populations contained only plain?winged flies, and the other half contained only striped?wing flies. Wing pattern is a genetically controlled trait that does not affect how well flies survive or reproduce. Would a biologist agree or disagree with the following statements about the experimental results? The experiment did not control for all the variables, so the environments were different enough that natural selection contributed to the changes in the frequency of the two wing types in these populations. a. agree b. disagree

          A biologist raised 100 populations of flies in a lab. At the beginning of the experiment, each population had 16 flies: 8 with plain wings and 8 with striped wings. These 16 flies reproduced to form the first generation of offspring. In each of the 100 populations, the biologist randomly chose 16 of the offspring as breeders for the next generation. She repeated this process for 20 generations. At the end of the experiment, half of the populations contained only plain?winged flies, and the other half contained only striped?wing flies. Wing pattern is a genetically controlled trait that does not affect how well flies survive or reproduce. Would a biologist agree or disagree with the following statements about the experimental results?



The experiment did not control for all the variables, so the environments were different enough that natural selection contributed to the changes in the frequency of the two wing types in these populations.

	a.	
agree

	b.	
disagree

Added by Vmvmn V.

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