Questions An orginal population of mice exhbits natural vanaton Below population

Question

Questions An orginal population of mice exhbits natural vanaton Below population. Answer questions 1-3 based on this diagram. a graph of ognd )Environmental pressures on the mice caused a directional shit in selection for fur color The change in the mean is a key feature in directional selection. Ccle the graph below 2) Evironmental factors changed the resources avalable for these mice reg in disruptive selection. Disruptive selection favors extreme phenotypes Circe the graph below that represents disruptive selection. 3) Anew predator places environmental pressures on the mice that cause stabilin selection on fur color Stablizing selecion favors intermediate phenotypes, reducing

Explanation / Answer

1. Graph 1 that is the first graph.

Explanation : The first graph represents directional selection where one extreme trait is favoured and a change in this trait moves the new curve on the graph either to the left or right of the original or normal distribution. In this case, the new curve has moved towards the right.

2.Graph 2 that is the second(middle) graph.

Explanation : The graph in the middle represents disruptive selection. It occurs in a changing environment when one of the extreme variation of a trait is favoured and in this case, the individuals at the upper and lower extremes have greater fitness than those in the middle.

3. Graph 3 that is the last graph.

Explanation : The third graph represents stabilizing selection. It occurs at constant environment and in this case the individuals in the center have greater fitness than those at the ends of the curve. It favours average individuals in a population.

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