The fruit fly, Drosophila melanogaster, has been the most popular eukaryotic organism used in classrooms. It has been used in heredity and biomedical research where the aims are to understand human genetics and developmental processes. It is also a popular model for teaching Mendelian genetics.
National Pears Helene Day. Itâs National Pears Helene Day! Pears Helene, or Pears Belle-Helene, is a delicious French dessert that combines warm poached pears, vanilla ice cream, and chocolate sauce. Auguste Escoffier created this dish and named it after the opera La belle Helene.
Ripening Temperatures. After the chill period, pears ripen best between 65 and 75 degrees F. Oregon State University Extension indicates that Bartlett pears take only four to five days to ripen, while Anjou takes up to 10 days. Both Bosc and Comice pears need between five and seven days to ripen. The days indicated for ripening are a guide but not law. Pears ripen faster when they get a longer chill period and take longer if the chill period was cut short. The best way to tell is to press your finger into the flesh near the stem.