By Benjamin A. Pierce
Учебник по генетике.
Welcome to Genetics necessities: suggestions and Connections, a quick genetics textbook designed in particular on your one-semester direction. through the 3 variations of my extra entire textual content, Genetics: A Conceptual Approach,my target was once to aid scholars be aware of the massive photograph of genetics. In writing Genetics necessities, i needed to proceed to take advantage of key innovations to lead scholars in studying genetics, yet with a extra concentrated approach.
Each bankruptcy of Genetics necessities has been streamlined, however the textual content nonetheless keeps the beneficial properties that experience made Genetics: A Conceptual strategy profitable: seamlessly merged textual content and illustrations, a robust emphasis on challenge fixing, and, most significantly, a robust concentrate on the strategies and connections that make genetics significant for college kids.
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Drawing on startling new proof from the human genome, an explosive new account of the genetic foundation of race and its position within the human tale
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Extra info for Genetics Essentials. Concepts and Connections
12. Who first discovered the basic principles that laid the foundation for our modern understanding of heredity? 13. List some advances in genetics that have been made in the twentieth century. 3 14. What are the two basic cell types (from a structural perspective) and how do they differ? *15. Outline the relations between genes, DNA, and chromosomes. 1 16. What is the relation between genetics and evolution? *17. For each of the following genetic topics, indicate whether it focuses on transmission genetics, molecular genetics, or population genetics.
Thus, most cells carry two sets of genetic information; these cells are diploid. But not all eukaryotic cells are diploid: reproductive cells (such as eggs, sperm, and spores) and even nonreproductive cells in some organisms may contain a single set of chromosomes. Cells with a single set of chromosomes are haploid. A haploid cell has only one copy of each gene. Concepts Cells reproduce by copying and separating their genetic information and then dividing. Because eukaryotes possess multiple chromosomes, mechanisms exist to ensure that each new cell receives one copy of each chromosome.
21 22 Chapter 2 Throughout interphase, the chromosomes are in a relaxed, but by no means uncoiled, state, and individual chromosomes cannot be seen with the use of a microscope. This condition changes dramatically when interphase draws to a close and the cell enters the M phase. M phase The M phase is the part of the cell cycle in which the copies of the cell’s chromosomes (sister chromatids) separate and the cell undergoes division. The separation of sister chromatids in the M phase is a critical process that results in a complete set of genetic information for each of the resulting cells.
Genetics Essentials. Concepts and Connections by Benjamin A. Pierce