Question

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Giraffes evolved over many generations to have long necks. Giraffes that had longer necks were more likely to survive than giraffes with shorter
necks because they had better access to food. This is an example of
Giraffes are also vertebrates, like humans. In fact, despite their different neck sizes, humans and giraffes have exactly seven vertebrae bones in
their neck. This similarity suggests human and giraffe necks are

Answer 1

Giraffes' long necks are an adaptation through natural selection for better access to food, enhancing their fitness. The fact that both humans and giraffes have seven cervical vertebrae points to a common ancestor and highlights homology in evolutionary biology. The similarity suggests that humans and giraffes both demonstrates a great example of homology and it suggest two species share a common ancestor,

Step-by-step explanation:

Giraffes evolved to have long necks which provided them with a survival advantage. This heightened ability to reach leaves high in trees increased their fitness, thereby favoring the long-neck trait. Such changes occur across generations due to natural selection, where heritable traits that enhance survival and reproduction are more likely to be passed on to offspring. This represents an aspect of evolutionary biology known as adaptation.

Additionally, the fact that humans and giraffes both have exactly seven cervical vertebrae demonstrates a great example of homology. This anatomical similarity suggests that these two species share a common ancestor, despite the vast difference in neck length and functionality. This shared trait illustrates how evolutionary processes can lead to diverse adaptations while maintaining a basic structural framework inherited from a common ancestor.