Evidence of Evolution and Horse Anatomy

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Evidence of Evolution

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Charles Darwin proposed that all new species descend from an ancestor, supported by extensive research. Evidence includes fossil records, embryology, comparative anatomy, and molecular biology.

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Fossils of Horse Ancestors

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Fossils show evolutionary changes in horse anatomy over time.

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Similarities in Horse Skulls

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Two similarities in skulls that suggest these species are related.

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Changes in Skull Anatomy

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The biggest change in skull anatomy from dawn horse to modern horse.

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Changes in Leg Anatomy

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The biggest change in leg anatomy from dawn horse to modern horse.

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Embryology: Organisms that are closely related may have physical similarities before birth.

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Embryology studies the physical similarities in embryos of closely related organisms.

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Images of six different embryos labeled A to F.

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These images show embryos of different species to compare their similarities.

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Hypothesize which embryo is from each of the following organisms: Human, Chicken, Rabbit, Tortoise, Salamander, Fish.

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Use the physical characteristics of the embryos to match them with the correct species.

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Older, more developed embryos from the same organisms are shown.

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These images help in understanding the development stages of embryos from different species.

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Embryos at their most advanced stage, shortly before birth.

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Embryos of different species show similarities in their advanced stages, indicating possible evolutionary relationships.