In males, meiosis is called spermatogenesis because it produces sperm cells. In females, the process is called oogenesis because it produces egg cells, also known as ova. In spermatogenesis, four fully functioning sperm are produced at the end of meiosis. In each round of oogenesis, only one fully functioning egg is formed, and the other three cells produced are non-viable polar bodies.
Check your owner's manual. Regular octane is recommended for most cars. However, some cars with high compression engines, like sports cars and certain luxury cars, need mid-grade or premium gasoline to prevent knocking.ut take note: the recommended gasoline for most cars is regular octane. In fact, in most cases, using a higher octane gasoline than your owner's manual recommends offers absolutely no benefit.
There's one more: ethanol. These days more than 95 percent of gas sold is E10, said AAA spokesman Michael Green. E10 is 10 percent ethanol and came into use after amendments in 1990 to the Clean Air Act, according to the Department of Energy. All cars are certified to run the stuff; in fact, it's difficult to find ethanol-free gas anymore.