Life cycle. Life cycle means the stages a living thing goes through during its life. In some cases the process is slow, and the changes are gradual. Humans have various steps during their lives, such as zygote, embryo, child and adult. The change from child to adult is slow and continuous.
Instantaneous. : Ovulation happens as an instantaneous event usually on day 14 of a 28 day cycle. The signs of ovulation start a day or two earlier and continue after ovulation has occurred. When an egg is released it retains its maximum fertilizing potential for about 24 hours after which it dies....Read more.he signs of ovulation start a day or two earlier and continue after ovulation has occurred. When an egg is released it retains its maximum fertilizing potential for about 24 hours after which it dies.
Typically, levels are high enough by two days after you have missed your period, but this can vary. Hormonal changes will possibly cause you to experience the following symptoms as early as two weeks after fertilization: 1  Rising progesterone levels cause fatigue as well as constipation.