What are the Different Methods of Sexual Reproduction in Animals

Methods of Sexual Reproduction in Animals


The sexual reproduction involves the fusion of two haploid cells (gametes) to form a diploid zygote.


Role of Meiosis:


  1. i) Meiosis help to reduce the number of chromosomes to one half in gametes.


  1. ii) It also helps in exchange of genetic material by the process of crossing oven




The gametes are of two types. Male gametes or sperms and Female gametes or eggs. Male gametes are formed in testes through the process of spermatogenesis. Female gametes are formed in ovaries through the process of oogenesis.




The two gametes from two parents, or from one parent (in case of self fertilization) unite together to form zygote which is the first diploid cell of the new generation.


New Individual:


The diploid number of chromosomes in the zygote provides the genetic make up for the new individual. The zygote by simple mitosis changes into embryo, and the embryo develops into a new individual by cell division, differentiation and growth.


Note: One of the modern educational trends is this: you need to study throughout life, not limited to the “crust” of one institution. Thanks to modern technology, you can get additional higher education remotely – sitting in front of your computer monitor. This form of education is only evolving. Therefore, it is not possible to gnaw granite science completely remotely. Yes, all the students learn the material on the Internet, consulting with teachers by mail or in a chat. But in order to pass the session or defend the thesis, you will either have to come to the university, or to one of the local centers of distance learning with him. The latter are needed for the teachers to be able to make sure that this is the person who studied, will confirm their knowledge.

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