genetics

Introduction

genetics, scientific study of the mechanism of heredity. While Gregor Mendel first presented his findings on the statistical laws governing the transmission of certain traits from generation to generation in 1856, it was not until the discovery and detailed study of the chromosome and the gene in the 20th cent. that scientists found the physical basis of hereditary characteristics. A brief summary of the basic laws of heredity and the terms used follows.

Sections in this article:

Introduction
Evolutionary Mechanisms
Modifications of Mendel's Principles
Basic Laws and Terminology
Bibliography

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