Why are developmental biologists so interested in studying echinoderm embryos?

Developmental biologists are particularly interested in studying echinoderm embryos because these organisms, such as sea stars and sea urchins, exhibit remarkable features that make them ideal for experimental research. Their embryos are transparent, allowing for easy observation of developmental processes, and they undergo a distinctive pattern of cleavage and morphogenesis that can provide insights into fundamental biological principles. Additionally, echinoderms share a common evolutionary ancestor with vertebrates, making them valuable models for understanding evolutionary developmental Biology. Their relatively simple body plans and accessible embryonic stages further facilitate studies on gene regulation and developmental pathways.