Ch. 15 Chromosomal Genetics (Exam 3).docx

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Department
Biology
Course
BIOL 110
Professor
D R.J O H N P E L E S
Semester
Fall

Description
Biology 110 Dr. Peles Date: / / . Chromosomal Genetics: Chapter 15 I. Chromosomal Theory of Inheritance A. Genes are found on chromosomes B. Chromosomes undergo segregation and independent assortment Chromosomal  Basis of Mendelian  Inheritance II. Sex-linked Inheritance Sex Determination X-Chromosome Y-Chromosome A. Important Considerations: 1. Dominant & recessive alleles 2. Number of X-chromosomes X­linked Transmission Common X­linked Traits: Hemophilia Muscular Dystrophy ~ 1 ~ Biology 110 Dr. Peles Date: / / . B. Barr body- Inactive X-chromosome in the cells of a human female Mosaic Phenotype III. Chromosomal Disorders A. Chromosome number 1. Non-disjunction- Failure of chromosomes to separate properly during meiosis
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