PPT-DNA structure- Chromosomes

Chromosomes long pieces of DNA Chromosomes have genetic information and are passed on every time a cell divides chromosomes Dividing onion cells chromosomes nucelus cell wall Information flow in cells. Essential idea: Chromosomes carry genes in a linear sequence that is shared by members of a species.. The . asian. rice (. Oryza. sativa. ) genome can be seen illustrated . above. . Rice possesses up 63,000 genes divided up between 12 chromosomes. chrmosomes. A . chromosome.  is an organized structure of . DNA.  and . protein.  found in . cells. . It is a single piece of coiled DNA containing many . genes. , . regulatory elements.  and . GENES. DNA. DNA. :  the chemical inside the nucleus of a cell that carries the genetic instructions for making living organisms. . The material inside the nucleus of cells that carries genetic information.. diploid. Sex cells (gametes/germ cells) have only one set of chromosomes . . = . haploid. . That means when fertilization . occurs, the new individual will. have the correct number of chromosomes.. 1. 2 . 4. 8 . How many chromosomes are in the middle cell?. 1. 2 . 4. 8 . At what part of the cell cycle would you see a chromosome that looks like this. ?. G. 1. G. 2. . M. S . At what part of the cell cycle would you see a chromosome that looks like this? . DNA GLOW Lab A new way to investigate DNA structure. V1.1: June 2018 © Copyright by Amplyus LLC, all rights reserved We bring the study of DNA structure to your hands Patent pending DNA GLOW Lab 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.. Neotech College of applied Science and Research, Neotech Technical Campus (NTC), Virod, Vadodara, Gujarat. Basic Concept of . Molecular Biology,. Unit:1 . [B.Sc. Bio-chemistry, sem-III, paper code BSCOC . 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 : . Chromatin organization and chromosome structure . General identification . 1-Chromosome: . Components in a cell that contain genetic information. Each chromosome contains numerous genes. Chromosomes occur in pairs: one obtained from the mother; the other from the father.. th. period. DNA means deoxyribonucleic acid . early 1900’s—not thought very important because so simple. DNA is inherited from your parents—basis for genetics . discovered in 1940’s. Mutations mess up DNA & can cause birth defects or diseases . 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?.