![]() ![]() ![]() (4) A possible chromosome segregation disturbance in gametogenesis due to senescent changes of heterochromatic regions is discussed.(3) Mutations at the white spotting locus (W) affect various aspects of hematopoiesis, melanogenesis and gametogenesis during development and in the adult animal.(2) These data show that spectrin is present in all stages of gametogenesis and embryogenesis, except in mature spermatozoa and that it undergoes cytoplasmic redistribution during morphogenesis.(1) Early diagnosis, high rate of survival of light-for-date babies and babies with congenital heart defect, and, possibly, exogenous factors working on gametogenesis might be an explanation.
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