PPT-Chromosomes

DNA Nucleic Acid macromolecule DNA is long thin molecule amp stores genetic information called chromatin Cell division requires compact structures chromosomes Chromosomes DNA eukaryotic cells coil around . Section 6.1. 1. Objectives. SWBAT differentiate between body cells and gametes.. SWBAT compare and contrast autosomes and sex chromosomes.. 2. Vocabulary. Somatic cell. Gamete . Homologous chromosome. Chromosome theory of inheritance. Genes located on chromosomes = gene locus. Thomas Hunt Morgan, Columbia Univ. “Fly room”. Drosophila. 100s of offspring. 2n = 8. 3 . prs. autosomes. X and Y sex chromosomes. 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. Karyotypes. To find what makes us uniquely human, we have to explore the human genome. . A . genome. is the full set of genetic information that an organism carries in its DNA.. A study of any genome starts with chromosomes, the bundles of DNA and protein found in the nuclei of eukaryotic cells. . 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.. 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? . Chromosomes carry genetic information. Chromosomes are wound up DNA. Diploid – Every body cell has 2 sets of chromosomes . n = number of chromosomes. Normal body cells have 2n (2 x n) chromosomes. Chromosomes carry genetic information. Chromosomes are wound up DNA. Diploid – Every body cell has 2 sets of chromosomes . n = number of chromosomes. Normal body cells have 2n (2 x n) chromosomes. Human Inheritance. Disorders caused by individual genes - dominant. Individuals with the disorder only need 1 allele to have the disorder. Huntington’s Disease. Caused by a repeat of the sequence CAG . 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. . 22 pairs of autosomes. 1 pair of sex chromosomes. XX = Female, XY = Male. Karyotype - chromosomes are arranged according to shape and size. AN EXTRA COPY OF CHROMOSOME 21 CAUSES DOWN SYNDROME. This condition is called . Fusion DNAreplicationAcentricfragment Dicentric Chromosome Formation Dicentricchromosome Radiationexposure Centromere Scoring Dicentrics with New Technologies 80 Slide Feeder Digital Camera and Image 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