Below you will find the question in which Greg was asked and my accompanying illustration.
You mentioned inyour muffin vs. cupcake column that method of reproduction was one factor biologistsuse to classify animals. According to a news report I read awhile back, the duck-billedplatypus is one of only two egg-laying mammals in the world. Do you know why thisis?
Whatis the difference between a cupcake and muffin?