Motorcycle Brake Pads: Sintered Vs Organic. We all love twisting the throttle to go down the road, but being able to stop your motorcycle is nice too. Brake pads can be one of those things that you keep neglecting over time and think to yourself that youâll get to it later.
The mature sperm cell is slender; in the middle part, the mitochondria are thick and ring-shaped. The DNA in the nucleus is maximally condensed.
The nucleus of the oocyte is called a pronucleus in this process, to distinguish it from the nuclei that are the result of fertilization. The sperm's tail and mitochondria degenerate with the formation of the male pronucleus. This is why all mitochondria in humans are of maternal origin.