1 one is correct.....he never think about linkage......later after chromosome mapping it was found that Mendel was lucky that they don't show much linkage !
This is known as aversion therapy. Here, a patient is concurrently exposed to a stimulus, typically an addiction, and some form of discomfort. The idea behind this is that the patient will associate the addiction with unpleasant experiences. In this way, it is hoped that the patient will overcome his/her addiction. This sort of therapy has taken many forms. The more common form is for example to paint unpleasant-tasting nail polish on one's nails to discourage nail chewing. More extreme forms include electric shock therapy.
The first one is the answer i think dont quote me <span />
Answer:
The key distinction is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success
Explanation:
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So the dark butterfly camouflages better on the tree. Where as the white one can clearly be seen and identified. A predator will also easily spot it and kill it. The dark butterfly has evolved over time to the color that it is, to best help it survive. This is also shown in the tread on the graph.
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