Question

Найдите стадию спермотогинеза

Answer 1

Сперматогенез - процесс развития мужских половых клеток.
Три фазы: размножение, рост, созревание - всё это проходит в семенниках. 
Размножение - клетки ткани (2n4c) многократно делятся митозом, образуют диплойдные сперматоциты I порядка с однохроматидными хромасомами (2n2c).
Рост - происходит самоудвоение молекулы ДНК, и построение второй хроматиды у хромосом. (2n4c)
Созревание - сперматоциты I порядка делятся мейотически. При первом деление из сперматоцита I порядка образуется 2 сперматоциты II порядка (n2c), при втором делении из них образуются сперматиды (nc). Они превращаются в сперматозойды. 

Answer 2

Stages of Spermatogenesis

Spermatogenesis is the process of sperm cell development. It involves several stages, including spermatogonial mitosis, meiosis, and spermiogenesis. The specific stage of spermatogenesis you are referring to is not explicitly mentioned in the search results provided. However, I can provide a general overview of the stages involved in spermatogenesis based on existing knowledge.

Spermatogonial Mitosis: - Spermatogonial mitosis is the initial stage of spermatogenesis. - During this stage, spermatogonia (sperm stem cells) undergo mitotic divisions to produce more spermatogonia. - This stage ensures the continuous supply of cells for the process of spermatogenesis.

Meiosis: - Meiosis is the next stage in spermatogenesis. - It involves two consecutive divisions (meiosis I and meiosis II) of the primary spermatocytes, resulting in the formation of haploid spermatids. - This reduction in chromosome number is essential for the eventual formation of haploid sperm cells.

Spermiogenesis: - Spermiogenesis is the final stage of spermatogenesis. - During this stage, round spermatids undergo extensive morphological changes to become mature, functional sperm cells. - These changes include the formation of the acrosome, elongation of the cell, and the development of a flagellum for motility.

The specific stage of spermatogenesis you are inquiring about may require more detailed information from a specialized source or academic literature. If you have a specific aspect of spermatogenesis in mind, please feel free to provide additional details for a more targeted response.