Sciencespeaking topic
Mitochondrial DNA passes only from the mother; the father's is destroyed at fertilization. So the power plants of your cells come down an unbroken female line; from your mother, your grandmother, thousands of years back. You carry a hidden family tree made only of mothers.
— mitochondrial inheritance
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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