PPT-Chromosome Structure Concept 13.3: A chromosome consists of a DNA molecule packed together

The bacterial chromosome is a doublestranded circular DNA molecule associated with a small amount of protein Eukaryotic chromosomes have linear DNA molecules associated with a large amount of protein. SUBMITTED BY:. ALABADO, SHEENA ANN C.. LUISTRO, JANELLE. What is a chromosome?. A chromosome is…. A very long DNA molecule and associated proteins that carries portions of the hereditary information of an organism.. 6c. Chromosome Mutations. Learning Intentions. By the end of this topic you should be able to:. (c) Chromosome structure mutations. Define ‘chromosome structure mutation’ . Name 4 chromosome structure mutations . Chromatin – the less tightly coiled DNA-protein complex. Centromere – the region of the chromosome that holds the two sister chromatids together during mitosis.. SEX CHROMOSOMES & AUTOSOMES. Sex chromosomes are chromosomes that determine the sex of an organism, and they may also carry genes for other characteristics. . B.Sc. Part II. Botany . Hons. .. Paper IV. . Dr. Pushpanjali Khare. Sr. . Chromosomes. The . term chromosome was coined by W. . Waldeyer. in 1888. .. Their . structures . varies in . different organisms . like . they are circular in . bacteria. . but . linear in eukaryotic organisms, however there number remains constant for a species.. inherited. traits and their variation. . Sometime people confuse genetics with genealogy, which considers relationships but not traits. Genetics is a life sciences. The science of heredity or genetics is the study of two contradictory aspects of nature : . 41. Learning Objectives—Level I. At the end of this unit of study, the student should be able to:. Define . chromosome. and . mitosis. .. List the basic steps of cytogenetic analysis, and select the most appropriate type of specimen for analysis of suspected constitutional and neoplastic (acquired) disorders.. (Chapters 6 and 3). . Presented by Dr. Laurie M. Erickson. Chair of the Department of Health Sciences. Blitstein Institute of Hebrew Theological College. Chicago, IL, USA.. 1. 6.1 Genome Size. Genome:. Structure and Function Dr. Farheen Waziri Assistant Professor DEPARTMENT OF ZOOLOG Y GAUTAM BUDDHA MAHILA COLLEGE GAYA Chromosome - Structure, Types and Functions Table of Contents Chromosome - Struct The recent cytological findings have also condemned the view that chromosomes have pellicle, matrix and chromonemata.A. Nucleolus organizer B. Chromosome C. NucleolusThe structure of chromosomes and g During each round of chromosome replication telomeresshortentheir sequences …… TELOMERES•TELOMERES consists of a simple repeat where a C+A-rich strand has the sequence C>1(A/T)1-4 lying at the e Gene. – DNA is a large molecule broken down into hereditary units called genes. DNA is organized & packaged into chromosomes. Chromosome. – DNA wound or coiled tightly around proteins (histones. Euploid. Have the . normal. chromosome number. Polyploid. A cell with . extra sets. of chromosomes. Ex: triploid (3n). Aneuploid. Cells missing a single chromosome or having an extra chromosome. Alterations in Chromosome Number. Chromosome. Chromosome . means: . chroma. - colour; some - body) . E. . . Strasburger. in 1875 discovered thread-like structures which appeared during cell . division. Waldeyer. coined the term chromosome first time in 1888. .