HerBlueEyes
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Kettlewell's experiment is included in most biology texts as an example of evolution occuring. How do we know that the moths evolved?

(peppered moths)

Respuesta :

jordanmoonjesus

Answer:

The environment the moths lived in used to be unpolluted. This made dark moths rare. As the area where light moths were found became more polluted, the light moths became less common in the polluted/dark areas. Light Moths began to evolve after not being able to survive in dark forests, they began to get darker and blend in with the polluted area to be safe from predators.

Explanation:

Histrionicus

The evolution of the moth is an evolutionary instance of directional color change in the moth population as a result of air pollution due to the industrial revolution.

During the nineteenth century in the United Kingdom, the dark (melanic) form of the peppered moth become the dominant form of the peppered moth. Before this change, there are very fewer numbers of dark moths were present and light-colored moths were common.

  • This change in frequency occurred due to Industrial Revolution as it increased air pollution and trees became darker.
  • Due to this change, light-colored moths were visible to birds and this leads to increase predation of these moths.
  • The darker form of the moth was less visible to predators.
  • The color change was due to adaptive evolution mainly to a single gene, with the melanic allele being dominant to the non-melanic allele.
  • At the end of the twentieth century, the atmosphere become clear once again in the United Kingdom.
  • The new changes would lead to a decrease in the frequency of the melanic form.

Thus, the evolution of moths was due to the adaptive selection type of natural selection.

Learn more about adaptive evolution:

https://brainly.com/question/4215121

Ver imagen Histrionicus

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