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The fundamental concepts of natural selection and evolution, including the definition of terms such as 'theory of natural selection,' 'descent with modification,' 'survival of the fittest,' and 'theory of use and disuse/inheritance of acquired characteristics.' it discusses how organisms with advantageous traits are more likely to survive and reproduce, leading to the passing of these traits onto future generations and the evolution of populations. It also clarifies the misconception that evolution is a random process and emphasizes the role of adaptation in the natural world.
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DEFINITON Nature selects the organisms that are best adapted to their particular environment to survive and to reproduce. For example, giraffes born with longer necks are better able to reach food, resulting in long neck giraffes being healthier and living longer so that they can produce more offspring than short neck giraffes. The end result is the passing of the “long neck gene” on to more offspring, resulting in a population of giraffes with long necks, instead of short necks.
DEFINITION Any population consists of individuals that are all slightly different from one another. Those individuals having a variation that gives them an advantage in staying alive long enough to successfully reproduce are the ones that pass on their traits more frequently to the next generation. Subsequently, their traits become more common and the population evolves.
DEFINITION Many people assume that "the fittest" refers to the strongest, biggest, or smartest and most cunning individuals. The fittest individuals are simply the ones who have the combination of traits that allow them to survive and produce more offspring in their particular environment. What makes an individual fit all depends on the environment at the time and the combination of traits that are most suited to flourishing in it.
would be short-necked giraffes stretching their necks to reach food, resulting in longer necks during the giraffe’s lifetime. Then this long neck trait being passed to offspring, resulting in giraffes being born with long necks.