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Cytokinesis does not occur until the very end of the stage of reproduction. This is because all the organelles and DNA must be replicated.
No, heavy rain does not usually occur until the mature stage.
Proestrus
The polysomnography study includes measurements of heart rate, airflow at the mouth and nose, respiratory effort, sleep stage (light sleep, deep sleep, dream sleep, etc.), and oxygen level in the blood.
Diplotene stage of meiosis I phase
stage 4
There are 4 stages of sleep: Stage 1, Stage 2, Slow wave sleep, and REM. The stages occur in that order. Stage 1 occurs as you are falling asleep, and REM occurs last and contains the craziest dreams. REM is the most difficult to awaken from, so it is likely the stage that you have heard referred to as 'deep sleep'.
Bedwetting occurs at stage 3 of NREM sleep (Stage 4)
They occur during REM sleep, usually in the second half of the night
stage 2 sleep
They occur during REM sleep, usually in the second half of the night
sleep spindles
The rhythmic bursts of brain activity that occur during Stage 2 sleep are called sleep spindles. These are short bursts of brain waves that help in the consolidation of memories and are characteristic of this stage of sleep.
It happens in the 4th stage
Sleep spindles occur during stages 2 of sleep, they are brief bursts of frequency in our brain wave patterns
stage 4
REM (Random Eye Movement).