Problem 3. This has two parts: A. Suppose that a population of forest dwellers i

Question

Problem 3. This has two parts: A. Suppose that a population of forest dwellers is predominantly green, but about 25% of each new generation of children are a lighter color -yellow or pale green. The lighter colored beings have to be careful, as they are more easily seen and eaten by predators! How can we explain this? What is happening that keeps producing yellow or light colored kids from green parents? (Remember Mendel's work) B. The climate begins to change and forest disappears over hundreds of years. Eventually, as the forest shrinks, this population is forced to move away, to a more open environment, with lighter fields and tall grasses. Over hundreds of generations, the percent of lighter organisms increases, and the percent of green beings, begins to decline almost disappear. What is the main evolutionary process that is affecting this change? Speculate on what environmental factors may have helped bring about this change and explain how. Be creative, but use scientific explanations to explain the process.

Explanation / Answer

A. This is explained by the laws of Mendel and by his idea of hereditary units which he called factors. These factors were later called genes which account for variations in inherited characters.

Note: you can learn to calculate the percentage by crossing the parents by a punnete square. If you cannot find how then feel free to ask.

B. The main evolutionary process that is affecting the change described in the question is "Natural Selection" which was given by Charles Darwin in his theory of evolution.

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