{ "item_title" : "The Biological Problem Of Today", "item_author" : [" Oscar Hertwig", "Peter Chalmers Mitchell "], "item_description" : "The Biological Problem Of Today: Preformation Or Epigenesis? The Basis Of A Theory Of Organic Development is a book written by Oscar Hertwig in 1896. The book aims to discuss the two major theories of organic development that were prevalent at the time, preformation and epigenesis. The preformation theory suggests that all living organisms are preformed in miniature within the germ cell, while the epigenesis theory suggests that the development of an organism is a result of the interaction between the genetic material and the environment. Hertwig provides a detailed analysis of both theories and presents his own theory of organic development, which he believes is a combination of both preformation and epigenesis. He argues that while the germ cell may contain preformed structures, the environment plays a crucial role in shaping the development of the organism. The book is written in a scientific and scholarly style and is aimed at biologists, geneticists, and other professionals in the field of biology. It is considered a classic in the field of developmental biology and is still relevant today.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/16/486/259/1164862596_b.jpg", "price_data" : { "retail_price" : "24.95", "online_price" : "24.95", "our_price" : "24.95", "club_price" : "24.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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