Description should include

• defining
  • area pellucida
  • area opaca
  • amnion
  • allantois
  • proventriculus
  • umbilicus
• exploring the daily growth of the embryo during incubation.

Process/Skill Questions:

• What are some of the major developments visible under a microscope during the first 24 hours of incubation?
• What day does the heart form and begin to beat?
• What day is it possible to see the embryo becoming covered with feathers?
• What day is it possible to see the beak, claws, and scales becoming firm?
• What are the differences in incubation periods of the various types of poultry?