A life cycle is a period involving one generation of an organism, whether through asexual reproduction or sexual reproduction. In regard to its ploidy, there are three types of cycles: haplontic life cycle diplontic life cycle diplobiontic life cycle (also referred to as diplohaplontic, haplodiplontic, or dibiontic life cycle) These three types of cycles feature alternating haploid and diploid phases (n and 2n). Th ...

Including:

• Biological life cycle - Haplontic life cycle
• Biological life cycle - Diplontic life cycle
• Biological life cycle - Diplobiontic life cycle

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A zygotic meiosis is a meiosis of a zygote immediately after karyogamy, which is the fusion of two cell nuclei. This way, the organism ends its diploid phase and produces several haploid cells. These cells divide mitotically to form either larger, multicellular individuals, or more haploid cells. Two opposite types of gametes (e.g., male and female) from these individuals or cells fuse to become a zygote. In the whole cycle, zygotes are th ...

See also:

Biological life cycle, Biological life cycle - Haplontic life cycle, Biological life cycle - Diplontic life cycle, Biological life cycle - Diplobiontic life cycle

Read more here: » Biological life cycle: Encyclopedia II - Biological life cycle - Haplontic life cycle

In gametic meiosis, instead of immediately dividing meiotically to produce haploid cells, the zygote divides mitotically to produce a multicellular diploid individual or a group of more diploid cells. Cells from the diploid individuals then undergo meiosis to produce gametes. The haploid gametes do not divide mitotically, however. Without growing larger, the gametes would fuse and produce the diploid zygote with gametes of the opposite type. In the whole cycle, gametes are the ...

See also:

Biological life cycle, Biological life cycle - Haplontic life cycle, Biological life cycle - Diplontic life cycle, Biological life cycle - Diplobiontic life cycle

Read more here: » Biological life cycle: Encyclopedia II - Biological life cycle - Diplontic life cycle