Even Fish Obey Mendel's Laws

Even Fish Obey Mendel's Laws

A.J. Gharrett

Even Fish Obey Mendel's LawsThis is part of What Does Genetics Have to Do with It? 3rd edn
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This is the first of a series of articles that consider the role genetics plays in conservation and management of our fisheries resources. Genetics is the discipline that makes a coherent field out of many diverse biological disciplines, which include the molecular level (e.g., biochemistry and cell biology), the organism (e.g., anatomy and physiology), interactions among organisms (e.g., ecology and population biology), and descriptions and phylogenetic relationships of species (e.g., zoology and ichthyology). Inheritance, its underlying mechanisms, and ultimately evolution, which at its simplest level is merely changes in the genetic instructions, are the basis of all biological disciplines. Unfortunately, the key to the door to genetics has a price. A number of underlying ideas are important to understanding the role of genetics. In addition, a special vocabulary (jargon if you are not already a geneticist) is used to describe these ideas. The first two chapters deal with the basic principles and vocabulary, but we will add more terms along with ideas introduced in later chapters. In this first chapter, we review basic inheritance, which is often referred to as Mendelian genetics.

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