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The finches were different species that shared a common ancestor
It is thought that the finches have a common ancestor. Separated on different islands, each island eventually produced different finches.
That the finches were similar to the ones on the mainland, but had adapted to the island environment.
Darwin hypothesized that the different finches on the Galapagos islands all had a common ancestor due to their similarities, but had evolved different beak shapes and sizes to adapt to different food sources on the islands.
they all evolved from one finch by natural selection.
The embryos help Darwin find that finches came from the same ancestor which they go through phases of evolutions, this depends on the island the finches are located. Darwin discover that in different islands the beak from the finches were bigger hence stronger to crack difficult shells from plans, but in a different island finches have smaller beaks to get nectar from that plants. Darwin came to the conclusion that finches adapt from their environment.
share a common ancestor and have evolved to adapt to different ecological niches on the islands. This observation provided evidence for Darwin's theory of evolution by natural selection.
Darwin explained his findings about the finches in the Galápagos Islands by proposing that they evolved from a common ancestor and adapted to different environments through natural selection. He observed variations in beak shapes among the finches that corresponded to their specific diets, leading him to theorize that these variations were the result of natural selection promoting traits that conferred a survival advantage in their respective habitats.
adaptive radiation
he saw that in the different places and things the finches ate made their beak a different size and shape to adapt to their surroundings
Charles Darwin developed the hypothesis that the Galapagos finches evolved from a common ancestor that arrived on the islands and diversified based on the different environments and food sources available on each island. This observation helped support his theory of evolution by natural selection.
Darwin observed that each of the Galapagos Islands had its own unique species of finches with different beak shapes that were adapted to the food sources available on each island. This observation led him to propose that these finches had evolved from a common ancestor and had diversified over time to survive in their specific environments.