Months
This animal is pregnant for 10 months
What are cattle.
Forms glands of the respiratory and digestive systems
What is the endoderm
This animal is pregnant for 11 months
What are horses?
Forms muscle, bone, circulatory system, urinary and reproductive systems
What is the Mesoderm
These animals are pregnant for 4 months
What is a pig
Forms epidermis of skin, nervous system and integumentary system
These animals are pregnant for five months
What are sheep and goats
Begins with the fusion of two gametes
What is fertilization
These animals are "pregnant" for three weeks
What are chickens?
Is the process in which a zygote is transformed into an adult organism
What is embryonic development