PPT-X-LINKED RECESSIVE INHERITANCE

XLINKED DOMINANT INHERITANCE XLINKED INHERITANCE dr Retno Sutomo PhD SpA XLINKED RECESSIVE INHERITANCE Segregation of Xlinked recessive allele Carrier mother Segregation of Xlinked recessive allele. This presentation . builds on session 1 exploring patterns of inheritance. Patterns of inheritance. The objectives of this presentation are to:. Understand how genes are inherited. Understand the differences between the inheritance patterns associated with Autosomal dominant, Autosomal recessive, X-linked recessive and chromosomal abnormalities. Homework #2 is due on Monday in lecture.. Change to 1b. . Do not calculate a . c. 2. value. .. Just calculate the . expected. phenotypic ratios if the genes for brown-ness and disease-resistance are actually the same gene (or completely linked). Then, say whether complete linkage is possible given the observed data.. Have you ever seen a family tree… do you have one??. Graphic representation of family inheritance.. Pedigree of Queen Victoria. Inheritance patterns:. Autosomal. dominant:. Examples: Polydactyly. Chapter 14. In the 1800s the popular inheritance theory was “blending”--offspring were a mixture of their parents. this suggests that organisms will become uniform over time (we know this isn’t true). Multiple alleles. a . gene inheritance pattern in which . at least . three unique alleles are present for one trait. the . three alleles may interact with each . other . using any other pattern (Dominant/Recessive, Incomplete Dominance, Codominance, etc.). SBI3U. Mendel Demonstrated. :. Law of Segregation. Law of Independent Assortment. The . alleles. for a gene . segregate independently. . during meiosis. . This applies to alleles located on homologous chromosomes. 12.1 Chromosomal Inheritance . 1. Genes are located on chromosomes; this is called the . chromosome theory of inheritance. .. 12.1 Chromosomal Inheritance. Chromosomes can be categorized as two types:. Stolen and edited from: IMS Dr. Kyle . Stutts. (SHSU) and Brandon . Freel. Objectives. Discuss genetic inheritance.. Investigate principles of inheritance.. Demonstrate how inheritance plays a role in sex-linked genes. Every trait is represented by 2 genes, one from the . father. and the other from the . mother. . When the 2 genes for any given trait are similar, the person is . homozygous . for this trait . If the 2 genes are different, the person is . A genetic disorder that is caused by abnormality in an individual's DNA. Abnormalities can range from small mutation in a single gene to the addition or subtraction of a whole chromosome or set of chromosomes.. Inheritance can be defined as the process where one class acquires the properties (methods and fields) of another. . With the use of inheritance the information is made manageable in a hierarchical order.. University of . Basrah. Al-. zahraa. medical college. . . Human Heredity . Chapters 2, 3, 4, 5. . Lippincott’s . Illustrated Reviews: Cell and Molecular Biology Chapter . 23. pair of chromosomes. A human male, has. 22. similar pairs and one pair consisting of two chromosomes that are dissimilar in size and structure. . The 23 rd pair in both the sexes is called . Exceptions to . mendelian. Genetics. Nonmendelian. Genetics. Inheritance is often . more complex . than it is for traits like those Mendel studied. Several factors can complicate it. .. While a dominant and recessive version of a trait is most common, it is not the only way genes can be .