gametogenesis การใช้

• Embryonic development in males and females follows a common pathway before gametogenesis.
• This is due to a mis-segregation ( nondisjunction ) during gametogenesis.
• Fertilization of the female gamete by the male gamete occurs rapidly after gametogenesis.
• Similarly, mice deficient in FANCD2 show hypogonadism, impaired fertility and impaired gametogenesis.
• If the adult mussels are stressed during the beginning of gametogenesis, the process is terminated.
• Gametogenesis has been shown to be greatly influence by importin ? proteins in multiple different ways.
• Thus, spermatogenesis is the male version of gametogenesis, of which the female equivalent is oogenesis.
• In females, gametogenesis is known as oogenesis which occurs in the ovarian follicles of the ovaries.
• MCM8-deficient mice are defective in gametogenesis and display genome instability due to impaired homologous recombination.
• The reduction in stored carbohydrates inhibits normal gametogenesis in the spring, with a reduction in fecundity.
• Mating is initiated by gametogenesis that produces small, motile gametes that fuse to form a small binucleate cell.
• The deletion event occurs randomly during gametogenesis ( formation of eggs or sperm ) or in early foetal development.
• The extra chromosome is retained because of a nondisjunction event during paternal or maternal meiosis I ( gametogenesis ).
• However, little is known about the underlying genetic mechanisms, which play a role in male sporo-and gametogenesis.
• Other studies suggest that eventual seminal regulator targets may be identified allowing with alterations to the massive epigenetic reprogramming during gametogenesis.
• This glycogen is then used to support gametogenesis during the next winter and early spring when food intake is at a minimum.
• Male and female FANCG mutant mice have defective gametogenesis, hypogonadism and impaired fertility, consistent with the phenotype of FA patients.
• Though this is not always the case, genetic mutations can occur spontaneously in one sex cell of a parent during gametogenesis.
• This may occur under conditions of stress with the entire cytoplasm undergoing gametogenesis and the original organism being left as a husk.
• As the oocyte is a product of female gametogenesis, the maternal contribution to the oocyte and consequently the newly fertilized egg is enormous.