CBSE Class 12: Reproduction in Organisms - Post Fertilization Events

In this video we will learn about the post fertilization events like formation of zygote and embryogenesis.

• Two haploid gametes are fused to form a diploid zygote

• Zygote will form outside the body in case of external fertilization and inside the body incase of internal fertilization

• Embryogenesis event starts once diploid zygote will be formed

• In embryogenesis, zygote grows, multiplies by mitotic division and differentiates in three layers that are: mesoderm, endoderm and ectoderm

• These three layers give rise to different types of organs.

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