Capacitation. Capacitation is the last steps in the maturation of mammalian spermatozoa and is required to render them competent to fertilize an egg. This step typically occurs after ejaculation in the female reproductive tract. In vitro, capacitation can occur by incubating ejaculated sperm in a defined medium for several hours prior to insemination.
Can sperm still fertilize an egg 24 hours after ovulation? If yes, will the sperm need another 12 hours for the capacitation process?
Yes they can. Fertilization can definitely take place 24 hours after ovulation. The capacitation usually takes place shortly after ejaculation and is facilitated by the uterine environment. It doesn't take 12 hours to occur. If you don't want to worry about an unwanted pregnancy or hiv/std, be more careful and don't have unprotected sex. Read more...