<prompt> Translate the following text to EnglishMwanasayansi mmoja wa California amefanya kuku wafanye kama punda kwa kubadilisha chembe za ubongo za kiinitete na chembe za ubongo za punda.  <response>: Underplayed : A California scientist announced that he has made chickens behave like quails by replacing their embryonic brain cells with quail brain cells. 