On The Germ Cells And The Embryology Of Planaria Simplissima

In this groundbreaking study, pioneering geneticist Nettie Maria Stevens explores the embryology of the planarian worm. Through a series of experiments, she discovered that sex was determined by the presence of a particular chromosome, known as the X and Y chromosomes. This work revolutionized the field of genetics and helped pave the way for future breakthroughs in the study of human development. This book is a must-read for anyone interested in the history of science and genetics.

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