The butterflies shown below all belong to the same species, but one of them has

Their population will decrease while that of orange-winged butterflies will increase. Therefore the allelic frequency for blue colored wings will be eventually eliminated from the population.

This is because the blue-winged butterflies will be predated more because they are more conspicuous. Most will not produce before they are predated on hence reducing their numbers. The next generations will have more and more of orange-winged butterflies until the blue-winged butterflies no longer exist in the population.

Electric field lines point in the direction that a positive test charge would accelerate if placed upon the line.

hope this helps :D