1 As winter temperatures in New England have increased over

1 ) “As winter temperatures in New England have increased over the last two decades, pitcher plant mosquitoes that remain active later into the winter have been able to grow larger and lay more eggs than those which enter dormancy earlier. Those that remain active later have thus become more abundant, and the population as a whole is active for more of the year.” A) Lamarckian explanation B) Darwinian explanation

2) “A European house sparrow released in the American southwest developed lighter plumage so that it would bebetter camouflaged in this sparsely vegetated habitat. Its descendents are still lighter colored today.” A) Lamarckian explanation     B) Darwinian explanation

Solution

1.This is Darwinian explanation. Only the fittest survives. With the increased temperatures, the pitcher plant mosquitoes adapted themselves to grow faster and lay more eggs.

2. This is Lamarckian explanation. An organism can pass on characteristics that it has acquired during its lifetime to its offspring. Here the European house sparrow has acquired the characteristic of lighter plumage and inherited that character to its offspring.