Answer:
Step-by-step explanation:
Genetic variation is a fundamental concept in the process of evolution. It refers to the differences in genetic material (DNA) between individuals of the same species or between different species. These differences arise through the processes of mutation, genetic recombination, and gene flow.
In the case of Natalie's dog and her puppies, genetic variation may have resulted in different physical traits, such as fur color, eye shape, or size. Over time, some of these traits may become more advantageous for survival and reproduction in a particular environment, leading to natural selection. For example, a puppy with a thicker coat may be more likely to survive in colder climates, while a puppy with a thinner coat may be better suited to warmer climates. As these advantageous traits are passed down from one generation to the next, they can lead to changes in the genetic makeup of a population over time, ultimately resulting in the process of evolution.
Therefore, genetic variation is a key factor that contributes to the diversity of life and the process of evolution. It provides the raw material upon which natural selection can act, leading to the development of new species and the adaptation of existing ones to changing environments.