21. Researchers have detached grasshopper spermatocytes from spindle fibers and moved them away from the metaphase plate via micromanipulation. 22. Meiosis during spermatogenesis is specific to a type of cell called spermatocytes that will later mature to become spermatozoa. 23. Although spermatocytes that divide mitotically and meiotically are sensitive to radiation and cancer, spermatogonial stem cells are not. 24. During the pre-anaphase stage, cleavage furrows are formed in the spermatocyte cells containing four univalent chromosomes. 25. Each of the original diploid germs cells or primary spermatocytes forms four functional gametes which is each forever young. 26. No spermatocytes can be detected inside the bursa, but an indeterminable mucous mass that might contain degenerated sperm. 27. Male gametocytes are called " spermatocytes ", and female gametocytes are called " oocytes ". 28. Aaligned spermatogonia then undergo meiosis I to form spermatocytes and meiosis II to form spermatids which will mature into spermatozoa. 29. "Mesostoma ehrenbergii " is a rhabdocoel flatworm with a distinctive male meiosis stage within the formation of spermatocytes . 30. "P . triqueter " males release spermatogonia or primary spermatocytes into the sea and females release primary oocytes.
