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Genetics Review

Genetic material resides in the nucleus of each cell, primarily composed of DNA, which is organized into structures called chromosomes. Genes, the fundamental units of heredity, are short segments of DNA that code for specific traits and come in pairs—one inherited from each parent. Furthermore, alleles are variations of a gene that provide diversity in traits. This overview delves into the intricate world of genetics, exploring the roles of DNA, chromosomes, genes, and alleles in hereditary processes.

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Genetics Review

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  1. Genetics Review

  2. Genetic Material • The nucleus of a cell contains genetic material • DNA • Chromosomes • Genes www.kent.edu/projects/cell/page7.htm

  3. Genes • Genes are short sections of chromosomes http://www.accessexcellence.org

  4. Genes come in pairs • Since chromosomes come in pairs (one from mom, one from dad) Genes come in pairs http://anthro.palomar.edu/biobasis/images/karyotype_male.gif

  5. Allele • Alleles are versions of a gene • Every gene has two or more alternatives http://library.thinkquest.org

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