Understanding of Amniotic Development through Observation of Chick Development

Abstract

Animal development area is one of subjects that students feel difficult because of many terms and complicate contents. So experimental inquiry class will help students to understand basic developmental process. Although vertebrate animals are developed as their own unique feature through different developmental process, the basic developmental process are very similar. As human and chick belong to amniote and shows very similar developmental pattern during embryogenesis, observation of chick development will give a good opportunity to understand the development of amniotes. The fertilized chick eggs can be easily purchased in the market and it takes about 21 days to hatch at 37 39 . Embryos in egg shell could be °C located using an inspection box and egg shell could be easily removed with a hacksaw. Although we could not see cleavage steps, neutral red-stained embryos showed many structures including brain, heart, eye, somites, wing and leg primordia, blood vessels, etc, which could not be hardly recognized without staining. Taken together, our study will help teachers and students to better understand the developmental processes on chick.