In a second degree murder case, in what circumstances would have been a manslaughter verdict if the jury had been given the same instructions on the subject of murder and manslaughter?

The cumulative effect of all of the errors hereinabove discussed was, we feel, prejudicial to defendant. It is reasonably probable that the jury would not have brought in its second degree murder verdict if there had been no omissions and errors in the instructions regarding the subject of murder and manslaughter. (See People v. Watson, 46 Cal.2d 818, 836, 299 P.2d 243.) A verdict of one type or the other of manslaughter would have been justified under the evidence.