expain the stages of human reproduction
Answers
Answer:
6 stages are occur during human reproduction...
1. gametogenesis-formation of gametes
2.insemination-transfer of sperm into female genutal tract
3. fertilisation- fusion of male and female gametes
4.implantation-developement of blastocyst
5. gestation- embryonic development
6. parturition-delievery of baby..
Answer:
The stages of Human Reproduction
Explanation:
Pre-fertilization
This stage involves the events prior to fertilization. Gamete formation (gametogenesis) and transfer of gamete are the two processes that take place during this stage. Gametes are sex cells which are haploid (23 chromosomes) in nature and are distinct in males and females. Male gamete is called sperm whereas female gamete is called ovum or egg. In every organism, these gametes are formed within special structures. Since female gamete is immobile, male gametes need to be transferred for fertilization.
Fertilization
Once the haploid male and female gametes meet and fuse together to form a zygote, this is known as fertilization or syngamy. This can occur either outside the body called external fertilization or inside the body called internal fertilization.
Post -fertilization
Fertilization results in diploid zygote formation. Eventually, the zygote divides mitotically and develops as an embryo. This process is called embryogenesis. During embryogenesis, cell differentiates and modify accordingly. Zygote development depends on the organism and its life cycle.
Oviparous and Viviparous
Animals are classified into oviparous and viviparous based on whether the zygote develops outside or inside the body respectively.
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