Thursday, November 22, 2007
The American monarch butterfly is a migratory insect. In order to survive, the monarch butterfly requires certain types of vegetation, in particular milkweed. In northern climates, such as New England and Canada, milkweed is available only in the summer. Rather than hibernating during the remainder of the year, the monarch butterfly migrates south to Mexico and California. Interestingly, this migration from Mexico to Canada and back takes more than one generation to complete. In other words, the butterflies arriving in Mexico now have never been there before. The path of migration is therefore not remembered, but is somehow stored in the butterflies’ genetic code. This is besides the fact that the method used by the butterflies to navigate is still little understood. Bear in mind that the butterfly’s brain is about pinhead size.
The question arises, how could this conceivably have evolved?
Evolution means “gradual development”. According to evolution, life developed through a series of very small changes. Each change must be small enough to have occurred spontaneously, yet large enough to give it’s bearer a significant reproductive value. The question is, how could the genetic “computer program” which guides the butterfly have developed gradually? Each butterfly must have full instructions guiding it in exactly the correct direction at each time of year in order to survive. A half written, incomplete or defective “program” would lead to butterflies committing mass suicide. On the other hand, a perfected “program” originating in one generation seems incredible, especially considering that this phenomenon is so complex that it is still a mystery to modern science.
Let's spend a few moments marveling at the miracles of creation.
To insist that this all came about as a result of small, random genetic mutations, each one having occurred by chance and having a significant survival value, is simply an insult to reason.
Posted by jewish philosopher at 8:16 PM