Summary of Rachel Feltman's Been There, Done That

Please note: This is a companion version & not the original book. Book Preview: #1 The first eukaryotic organism, a single-celled protist, began making sex cells, or gametes, around one to two billion years ago. These were haploid cells that only carried half of the genetic code of the original organism. They needed to combine with other haploid cells to create a fully functional set of chromosomes. #2 The first known example of sex as we know it is from about 385 million years ago, when fos