What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
1From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
1From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
1
How does the embryo turn from gastrula into neurula? How is the neural tube formed?
Explain the morphology of an embryo from ventral to dorsal portion after neural stage?
What is the morphological feature that defines that stage?
What are the archenteron?
What is yolk sac?
What are pericardium?
What are the three types of germ layers that form tissues and organs in animals?
What are the animal pole and the vegetal pole of the vertebrate egg?
What is the chorioallantois membrane present in the embryonic development of reptiles and birds?
What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
Define polyembryony?
What is the function of the vitellus in the vertebrate egg?
What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?
What are twins? Genetically what are the two types of twins that can be generated?