PPT-DNA, Chromosomes

and Genes How are they related httpcommonswikimediaorgwikiFileChromosomegif DNA Chromosomes Genes httpcommonswikimediaorgwikiFileChromosomegif DNA Chromosomes Genes Cell. The yarn represents DNA.. DNA is a tiny, long, thin chemical. . How does the yarn resemble DNA?. If we looked closely at the . DNA inside each of your cells, . it would look like a twisted ladder. . EQ:. What is the importance of meiosis in providing genetic variation?. . SPECIALIZED CELLS. You have many specialized cells in your body that can be divided into two groups. . 1. . . SOMATIC. = body cells; make up most of your . Genetics and Heredity . See what you remember..  . Directions:. Fill in the blanks with vocabulary terms from the list below.. All organisms reproduce, or make more organisms that are similar to themselves. ______________________ also involves the passing of traits from one parent to offspring. The passing of traits from parents to offspring is called _____________________________. A _____________ is a set of instructions for an inherited trait. For example, a gene may contain the instructions that determine the color of a person’s eyes. The genes are located on structures inside a cell called _____________________________. After scientists recognized that chromosomes store the genetic information, they began an intensive search to learn more about the structure and chemical composition of chromosomes.. What is DNA?. DNA is where the GENETIC CODE is stored.. It is a set of instructions for building proteins. Sent by the CEO to the WORKERS as instructions for building PROTEINS. Who are the workers?. The RIBOSOMES. Chromosomes carry genes in a linear sequence that is shared by members of a species.. Understandings:. Prokaryotes have one chromosome consisting of a circular DNA molecule. . Some prokaryotes also have plasmids but eukaryotes do not. .. .. DNA . in cells is usually spread out so transcription can take place.. During . cell division, . chromosomes. form. .. Chromosomes are . DNA. and protein (. histones. ) coiled into a rod.. After DNA replicates, two . 3.2.1. . Bacterial Chromosomes (prokaryotes). Most only have 1 chromosome.. Which means, it only contains a single copy of each gene (except during cell division when chromosomes are replicated).. Has circular DNA that contains all genes needed for basic life processes of the cell.. Associate Professor and Head. Department of Sericulture. Yuvaraja’s College, . University of Mysore, Mysore, India. 11-Sep-20. 1. www.hbmahesh.weebly.com. CHROMOSOMES. The chromosomes are nuclear components of special organization, individuality and function. They are capable of self reproduction and play a vital role in heredity, mutation and evolution.. 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 2n 2n Meiosis 2. How many DNA molecules are present in a chromosome of a cell in metaphase of mitosis? How many DNA molecules are present in a chromosome of a cell at metaphase II They are also called as mega chromosomes. . These chromosomes are very long and thick in appearance during metaphase than normal chromosomes.. Hence they are called as Giant chromosomes.. The Giant chromosomes are of two types-. .. That is because DNA contains the instructions for making proteins.. And proteins determine the traits of an organism (you, for example). . 2. . The Structure of DNA . Where is the DNA in these pictures?. 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. . Chromatin. - unwound DNA (loose). . Copied. Sister chromatids. - two identical copies of DNA (loose). . Coiled and Connected. Chromosomes. - two coiled, identical copies of DNA connected to each other (tight).