CHAPTER 7: Chromosomes, chromatin, and the nucleosome OUTLINE Chromosome sequence diversity Chromosome duplication segregation The nucleosome Higher-order chromatin structure Regulation of chromatin structure Nucleosome assembly
OUTLINE ➢ Chromosome sequence & diversity ➢ Chromosome duplication & segregation ➢ The nucleosome ➢ Higher-order chromatin structure ➢ Regulation of chromatin structure ➢ Nucleosome assembly CHAPTER 7: Chromosomes, chromatin, and the nucleosome
CHAPTER 7: Chromosomes, chromatin, and the nucleosome Chromosome sequence diversity Chromosomes Shape: circular or linear Number in an organism is characteristio Copy: haploid, diploid polyploid Genomes 3/15/05
Chromosome sequence & diversity CHAPTER 7: Chromosomes, chromatin, and the nucleosome Chromosomes ➢ Shape: circular or linear ➢ Number in an organism is characteristic ➢ Copy: haploid, diploid, polyploid Genomes 3/15/05
36∽ a Difference in the structures of eukaryotic and prokaryotic cells is a key to better understand the go molecular processes of genome maintenance and expression, as well as the differences in these processes between eukaryotes and prokaryotes 3/15/05
Difference in the structures of eukaryotic and prokaryotic cells is a key to better understand the molecular processes of genome maintenance and expression, as well as the differences in these processes between eukaryotes and prokaryotes Chromosome sequence & diversity 3/15/05
hapl。id Figure 7 bacteria 300°30∽0 flagellum nucleoid chromosome plasmid pr。 karyotic cell diploid cell golgi 1 um apparatus eukaryotic cell nucleus chromosomes endoplasmic 10 um reticulum mitochondria hapl。 id cell bright 2004 Pearson Education, Inc, publishing as Benjamin Cum
Chromosome sequence & diversity Figure 7-1*
genome the complexity of the 3 Q organism b Genome size: the length of DNA ∽0o=o0 associated with one haploid complement of chromosomes go> Gene number: the number of genes 2 included in a genome a> Gene density: the average number of genes per mb of genomic DNA See Table 7-2 to find the relationshi 3/15/05
Chromosome sequence & diversity ➢ Genome size: the length of DNA associated with one haploid complement of chromosomes ➢ Gene number: the number of genes included in a genome ➢ Gene density: the average number of genes per Mb of genomic DNA Genome & the complexity of the organism See Table 7-2 to find the relationship 3/15/05