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The Human Genome

Human Heredity. polygenic trait - trait controlled by two or more genesPedigree - chart that shows the relationships within a familyAutosome - autosomal chromosome; chromosome that is not a sex chromosomesex chromosome - one of two chromosomes that determine an individual's sex; females have two

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The Human Genome

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    1. The Human Genome Chapter 14

    2. Human Heredity polygenic trait - trait controlled by two or more genes Pedigree - chart that shows the relationships within a family Autosome - autosomal chromosome; chromosome that is not a sex chromosome sex chromosome - one of two chromosomes that determine an individual's sex; females have two X chromosomes; males have one X chromosome and one Y chromosome Karyotype - set of photographs of chromosomes grouped in order in pairs

    3. Human Genome Chromosomes 21 and 22 are the smallest human autosomes. Chromosome 22 contains approximately 43 million DNA bases. 22 contains as many as 545 different genes includes an allele that causes a form of leukemia Chromosome 21 contains roughly 32 million bases. 225 genes, including one associated with ALS

    4. Karyotype Making a Karyotype Photograph chromosomes during mitosis Cut chromosomes out of photograph Group them in order, in pairs Male 46XY Female 46XX

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