Rethinking heredity, again.

نویسنده

  • R Bonduriansky
چکیده

The refutation of 'soft' inheritance and establishment of Mendelian genetics as the exclusive model of heredity is widely portrayed as an iconic success story of scientific progress. Yet, we are witnessing a re-emergence of debate on the role of soft inheritance in heredity and evolution. I argue that this reversal reflects not only the weight of new evidence but also an important conceptual change. I show that the concept of soft inheritance rejected by 20th-century genetics differs fundamentally from the current concept of 'nongenetic inheritance'. Moreover, whereas it has long been assumed that heredity is mediated by a single, universal mechanism, a pluralistic model of heredity is now emerging, based on a recognition of multiple, parallel mechanisms of inheritance.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rethinking Edgar Tekere’s A Lifetime of Struggle

This article seeks to interrogate the construction of identities in Edgar Tekeres A Lifetime of Struggle for the purposes of establishing political legitimacy and heroism for himself.This article observers that the autobiographical narrator attempts to achieve this end through constructing heroic identities on a multiplicity of sites such as heredity, military,prisoner,welfare,masculine,intelle...

متن کامل

The Double Pedigree: A Method for Studying Culturally and Genetically Inherited Behavior in Tandem

Transgenerational sources of biological variation have been at the center of evolutionary studies ever since Darwin and Wallace identified natural selection. This is because evolution can only operate on traits whose variation is transmitted, i.e. traits that are heritable. The discovery of genetic inheritance has led to a semantic shift, resulting in the tendency to consider that only genes ar...

متن کامل

Book Reviews and Abstracts

on the following subjects:?the incidence of defect; the physiology of reproduction; various types of insanity (apparently picked at random); the menace of the feeble minded; criminal insanity; sterilisation, voluntary and compulsory; birth control, and a Chapter entitled "Terrible Families," giving an account of the Kallikak and the Jukes family. Very highly debatable propositions are set down ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Trends in ecology & evolution

دوره 27 6  شماره 

صفحات  -

تاریخ انتشار 2012