Chapter 3 Study Guide #1

Chapter 3 Study Guide #1 - Chapter 3 27. Chromatin: Nuclear...

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Chapter 3 27. Chromatin: Nuclear material that gives rise to chromosomes during mitosis. Complex of DNA, histones, and nonhistone proteins. Chromosome: Roadlike structure that appears in the nucleus of a cell during mitosis. Contains the genes responsible for heredity. Structure composed of a long DNA molecule and associated proteins that carries part or all of the hereditary info of an organism. Genetics: The study of the mechanisms of transmission of genes from parents to offspring Sex Chromosomes: A chromosome that carries genes determining the genetic sex of an individual Autosomes: Chromosomes other than sex chromosomes 28. Gregor Mendel Drosophila melanogaster o Important laboratory model for over 100 years Wild type characteristics o A characteristic similar to that found in wild animals 29. X-O System: Involves one kind of chromosome. In females, all cells except gametes possess two X chromosomes During meiosis, homologous X chromosomes segregate, and all eggs contain one
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Chapter 3 Study Guide #1 - Chapter 3 27. Chromatin: Nuclear...

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