Answer / Shabd Prakash

Polyembryony is a rare phenomenon in which an organism develops multiple embryos from a single fertilized egg. This can occur through various mechanisms, such as the division of the zygote before implantation (true twinning) or through parthenogenesis (development without fertilization).

What is notochord?

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When are archenteron and blastopore formed?

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What are the archenteron and the blastopore?

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After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?

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What are the functions of umbilical cord?

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How is the yolk sac formed? What is the function of the yolk sac?

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What are the four initial stages of the embryonic development?

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What are the three types of germ layers that form tissues and organs in animals?

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How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?

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How yolk sac is formed?

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What is the function of the vitellus in the vertebrate egg?

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How does the embryo turn from gastrula into neurula?

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