amorphous
发表于 2025-3-28 17:43:45
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Ringworm
发表于 2025-3-28 21:47:07
Euripides, Iphigenie bei den Taurernstill producing the gametes necessary for propagation of the species. The stem cell population in the adult hermaphrodite is relatively large, with stem cells giving rise to daughters that appear intrinsically equivalent; however, some of the daughters retain the proliferative fate while others ente
curriculum
发表于 2025-3-29 01:35:07
https://doi.org/10.1007/978-3-322-83862-9line is emerging as a particularly sensitive and powerful model for these studies. The germ line is subject to environmentally regulated diapause points that allow worms to withstand harsh conditions both prior to and after reproduction commences. It also responds to more subtle changes in physiolog
香料
发表于 2025-3-29 04:58:20
https://doi.org/10.1057/9780230369191neration of haploid gametes. Haploid reproductive cells are produced through one round of chromosome replication followed by two successive cell divisions. Characteristic meiotic chromosome structure and dynamics are largely conserved in .. Chromosomes adopt a meiosis-specific structure by loading
Critical
发表于 2025-3-29 11:08:21
https://doi.org/10.1057/9781137371492le germ cells both undergo meiosis to produce haploid complements of DNA, at the same time they also each undergo distinct differentiation processes that result in either sperm or oocytes. This review will discuss our current understanding of mechanisms of sperm formation and differentiation in . ga
凝视
发表于 2025-3-29 12:08:11
https://doi.org/10.1057/9780230274921nd translational accessibility in the cell cytoplasm provides unique advantages over DNA-based controls for developing germ cells. This mode of gene expression is especially exploited in germ cell fate decisions and during oogenesis, when the developing oocytes stockpile hundreds of different mRNAs
gregarious
发表于 2025-3-29 16:44:12
https://doi.org/10.1057/9780230508590netic pathways lead to the apoptotic demise of germ cells. We are only beginning to understand how these pathways that all require the CED-9/Bcl-2, Apaf-1/CED-4 and CED-3 caspase core apoptosis components are regulated. Physiological apoptosis, which likely accounts for the elimination of more than
威胁你
发表于 2025-3-29 21:00:50
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证明无罪
发表于 2025-3-30 00:41:43
https://doi.org/10.1007/978-981-16-3009-5tilization is highly efficient. Sperm become fertilization competent after undergoing a maturation process during which they become motile, and the plasma membrane protein composition is reorganized in preparation for interaction with the oocyte. The highly specialized gametes begin their interactio
挫败
发表于 2025-3-30 07:26:08
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