PPT-The Chromosomes and karyotype

Phases of Mitosis and Meiosis Unit 2 glossary Chromatin diffuse long fibers of DNA with proteins attached Single chromosomes a chromosome which has not been duplicated like ½ of an x Duplicated chromosomes a chromosome which has been duplicated a complete X. A chart of chromosome pairs arranged by length and location of the centromere. How are karyotypes made?. Somatic cells (remember these are body cells) in metaphase are grown and then dropped onto a slide bursting the nucleus. . What mode of inheritance shows a blending of a trait?. Incomplete dominance. What is the sex of this individual?. Female. Who determines the sex of a child? . Father. Identify the disorder.. Turner’s Syndrome. DNA. Nucleic Acid macromolecule. DNA is long, thin molecule & stores genetic . information called . chromatin. Cell division requires compact structures = . chromosomes. Chromosomes . DNA . (. eukaryotic cells) coil around . Vocabulary. Karyotype. Autosome. Sex chromosome. Nondisjunction. Monosomy. Trisomy. Pedigree. Carrier. Restriction enzyme. Restriction site. Restriction fragment. Sticky ends. Recombination. Gel electrophoresis. cytogeneticsDaniel Weisdorf MDUniversity of MinnesotaFebruary 10 2015Reporting cytogeneticsWhat is itTerminologyClinical valueWhat details are importantDiagnostic ToolsMicroscope What do the cells Ms. Diana and Ms. Su’ad. Karyotype Studies. The study of genetic material does not only involve the study of genes. It also involves whole chromosomes by using images of chromosomes stained during metaphase. . 2. Chromosomal Mutations. Change in # or structure of chromosome. Happens as result of chromosomes breaking during meiosis. Can occur in any organism, but normally in plants. Five types. . Deletion. : is the general morphology of the somatic chromosome. Generally, . karyotypes. represent by arranging in the descending order of size keeping their . centromeres. in a straight line.. Idiotype. : the . karyotype. is an important clinical method for diagnosing genetic disorders.  Explain why it is useful for diagnosing . monosomies. and . trisomies. .”  . (3 marks). Key Ideas. karyotype. = photograph of all the chromosomes in a cell. ! . Asmaa A. Almukhtar .PHD . Lecturer . Medical Genetic Department. ICCMGR. 2021. How to read karyotype?. Need to know chromosomal structure and composition. What is the karyotype?(photograph). What is the karyotyping?(process). DISCLAIMER: • The presentation includes images which are taken from Google images or books . • They are being used in the presentation only for educational purpose . • The author of the presenta Important. Notes. For revision only. Objectives: . Describe the number, structure, and classification of human chromosomes . Explain what a Karyotype is and how it is obtained. . Describe chromosomal banding and explain its use. . LEC 3 genetic. Cytogenetic disorders: . Karyotype. . is a . paragraphic. representation of a stained metaphase spread in which the chromosomes are arranged in order of decreasing length.. Giemsa. stain . Why do scientists look at chromosomes. ?. Scientists can diagnose or predict genetic disorders by looking at chromosomes. . This kind of analysis is used in prenatal testing and in diagnosing certain disorders, such as.