{"product_id":"nettie-stevens-geneticist-sex-scientist-chromosomes-postcard","title":"Nettie Stevens Geneticist Sex Scientist Chromosomes Postcard","description":"WS2 This beautiful rarely found and most unique modern origin postcard is a unique and wonderful souvenir to Nettie Maria Stevens who was an American geneticist credited with the discovery of sex chromosomes. In 1905, soon after the rediscovery of Mendel's paper on genetics in 1900, she observed that male mealworms produced two kinds of sperm, one with a large chromosome and one with a small chromosome.This specialist postcard has an artist contemporary animated painting of her surrounded by the objects related to her studies together with one of her most memorable quotes resting underneath her portrait unused in brand new mint condition","brand":"Postcard Finder","offers":[{"title":"Default Title","offer_id":56204059836742,"sku":"118936","price":3.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/3216\/9030\/files\/nettie-stevens-geneticist-sex-scientist-chromosomes-postcard-118936-p.jpg?v=1773752387","url":"https:\/\/postcardfinder.co.uk\/products\/nettie-stevens-geneticist-sex-scientist-chromosomes-postcard","provider":"Postcard Finder","version":"1.0","type":"link"}