In the study of embryology, it has been observed that some traits in certain embryos disappear as the embryo develops. This observation is part of the concept of developmental biology, where certain features present in early stages of embryonic development may not be present in the fully developed organism. A classic example of this is the presence of pharyngeal arches in human embryos, which are present early on but largely disappear or transform into different structures during later development. This phenomenon is related to the idea of evolutionary relationships and the study of homologous structures among different species.
Which has been observed in the study of embryology?
Species whose embryos have similar traits rarely have a common ancestor.
Species whose embryos have similar traits always have similar body forms as adults.
All traits present in early embryos remain throughout development.
Some traits in certain embryos disappear as the embryo develops.
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