Genetics with Basics of Selection - M.P. Myhun - 2008

CHAPTER I. Genetics as a Science

1.1. Subject, Objectives, and Methods of Genetics

The evolution of living matter on Earth occurs through an endless succession of generations. Life is inextricably linked with the reproduction of organisms, as General characteristics specific to a given species are passed down from parents to offspring. METABOLISM/2.html">THE CONCEPT OF heredity refers to the universal ability of organisms in the living world to self-replicate across successive generations, a trait inherent to all living things.

Heredity is the property of parents to transmit their traits and developmental features to the next generation.

Inheritance is The process of transmitting genes (hereditary traits) to offspring.

Alongside heredity, variation is an equally pervasive phenomenon of all living things. The resemblance between organisms is never absolute.

Variation is the ability of living organisms to acquire new traits and properties.

These two concepts define genetics as a science.

Therefore, genetics is the science of the heredity and variation of organisms.

The main task of genetics is to develop Methods for managing heredity and variation in order to direct the individual development of organisms.

The subject of genetics is The Study of the laws of inheritance, variation, preservation, and realization of information in the organic world.

The primary method of genetics is genetic (hybridological) analysis — a system of crossings used to determine The Nature of trait inheritance. Genetics also employs methods from all related sciences: cytological, ontogenetic, statistical, biochemical, population, pedigree analysis, Introduction/32.html">Genetic Engineering, and others.

Modern genetics is a multifaceted science that encompasses a wide range of distinct and specialized disciplines. Genetic engineering is undergoing significant development; its progress opens up incredible Prospects for controlling the heredity of organisms, serving as a highly influential factor in human impact on the environment and humanity itself. Genetics serves as the methodological foundation for all biological sciences and is of great importance as the theoretical basis of evolutionary theory, paving the way to understanding The Essence of life. It is also important to note the significant practical value of genetics for selective breeding, medicine, nature conservation, ecological issues, and more.