PPT-1 THE CHROMOSOMAL BASIS OF INHERITANCE

The chromosomal basis of sex varies with the organism Sexlinked genes have unique patterns of inheritance Copyright 2002 Pearson Education Inc publishing as Benjamin Cummings Genetics 3 In human and other mammals there are two varieties of sex chromosomes . 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. R. r. Source: plant-genetics.kais.kyoto-u.ac.jp. ATGGGCACTGCCACT. A chromosome is a single DNA molecule forming a complex with histone proteins. DNA is highly compacted: DNA + histone proteins = . chromatin. CMPS 2143. Inheritance. Heart of concept of inheritance is the . is-a. relationship. But in the real world, objects classified in multiple, mutually non-overlapping ways.. spork. is a fork and a . Systems Programming. Inheritance. Introduction. Base Classes and Derived Classes. Five Examples of Base Class and Derived Class Relationships. Constructors and Destructors in Derived Classes. Systems Programming . 1. Inheritance. Inheritance. allows a software developer to derive a new class from an existing one. The existing class is called the . parent class,. or . superclass. , or . base class. The derived class is called the . The chromosomal basis of sex varies with the organism. Sex-linked genes have unique patterns of inheritance. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings. Genetics. 3. In human and other mammals, there are two varieties of sex chromosomes, .  . Studying genetics . can be accomplished in part by . investigating the history of discoveries. that have lead to our . understanding of DNA and its role in gene expression and biological inheritance. La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . 12. Why did the improvement of microscopy techniques in the late 1800s set the stage for the emergence of modern genetics? . It revealed new and unanticipated features of Mendel’s pea plant varieties. . 1. Chromosomal Theory of Inheritance. Theodor . Boveri. Walter Sutton. In 1902, Walter Sutton and Theodor . Boveri. developed the . Chromosome Theory of Inheritance. . . This theory basically states that Mendelian genes have a specific locus on the chromosome and that chromosomes undergo segregation and independent assortment during meiosis. . 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:. 1. A. Background. . 1. Genetics. . 1860’s—. Mendel. . proposed that discrete . inherited . factors . segregate . and assort . independently . during gamete . formation. . 2. Cytology. . What if it’s NOT just the number?. Gene Mutations. Damaged Chromosomes . –. sometimes a portion of a gene or chromosome is lost or damaged during meiosis. Gene mutation. – a mutation that affects the gene. Prokaryotic cell. Plasmid (ring of DNA. ). 50 x Smaller 0.2-2μm. 50 x Bigger 10-100μm. And small rings of DNA called plasmids. Inside a nucleus. Main differences. Prokaryotes:. SIZE – 50 x smaller than eukaryotes.