Final answer:
Sea urchins are extensively used in Biochemistry for developmental biology research, particularly for examining fertilization and egg activation.
Step-by-step explanation:
Within basic research, sea urchins have been a standard research animal in Biochemistry. These organisms play a critical role in studies due to their use in developmental biology research. Sea urchins are instrumental for examining the mechanisms of fertilization and egg activation, as well as exploring the physiological processes during early development, and the regulation of differentiation in early embryos.
The transparency of the eggs and early embryos of many commonly used sea urchin species makes them ideal for microscopic examination. Additionally, sea urchin embryos develop synchronously when a batch of eggs is fertilized, making them particularly useful for biochemical and molecular studies.