Chapter 27, Problem 19STP

Summary Introduction

To explain:

The reason for one crow to be born in an area’s population with longer claws on its feet than other crows in the same population according to Darwin’s theory of natural selection.

Introduction:

According to Charles Darwin, natural selection is the main method by which evolutionary modification occurs. It is a naturally occurring, mechanistic version in which those organisms that consist of traits that make it more likely for them to survive are more likely to pass those traits along to their offspring, thereby changing the genetic distributions in their populations over multiple generations and ensuing in adaptation to the environment.

Explanation of Solution

The theory of natural selection was proposed by Charles Darwin. It explains that nature has its own manner to eliminate the organisms which cannot live or survive. In natural selection many characteristics are inherited, more offspring are produced than are capable to survive, and offspring with more favorable features will survive and have more offspring than those individuals with less favorable traits. One crow in an area’s population is born with longer claws on its feet than other crows in the same population because there is chance of lack of food source in that environment, So that according to Darwin’s law of natural selection, that crow evolved long claws to get its food.

Conclusion

Darwin additionally defined a form of natural selection that relies on an organism's success at attracting a mate, a method called as sexual selection. The colorful plumage of peacocks and the antlers of male deer are both examples of traits that evolved under this type of selection.