a segment of DNA that can move from one place to another in a cell's genome or between a bacterial cell and a plasmid or virus. Viruses may even carry a transposon from one bacterium to another. Also called jumping gene, transposable element. segment of DNA that can move from one place to another in a cell's genome or between a bacterial cell and a plasmid or virus. Viruses may even carry a transposon from one bacterium to another. Also called jumping gene, transposable element.
Women with a low body weight, are frequently under high stress, or in perimenopause tend to have irregular periods. These women have very low estrogen production, so the body has trouble communicating to the ovaries that eggs need to be released, and ovulation does not take place.
Ready, set, perimenopause. In this phase, your body will start providing helpful physical clues that the menopause process is starting. And it can still be years before your last menstrual period. Some common, normal signs include irregular periods, hot flashes, vaginal dryness, sleep disturbances, and mood swingsâall results of unevenly changing levels of ovarian hormones (estrogen) in your body. Read more about how you'll know you're near menopause.