BIO 402/502 Advanced Cell & Developmental Biology I. Section IV: Dr. Berezney. Lecture 1. The Cell Nucleus and its Genome. Organization of Eukaryotic Genome. Contrasting features of prokaryotic and eukaryotic genomes with respect to size, percent of coding region and number of genes.
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Unit 3: Interphase Nucleus. Heterochromatin. Nucleolus: site of ribosomal assembly and rRNA transcription. Heterochromatin : dark, condensed DNA that is transcriptionally inactive during interphase.
Cell Nucleus. Tamboli A.Z. Department of zoology ,S.M.Joshi college, hadapsar . F.Y. B.Sc. General Definition. The nucleus is the genetic control center of a eukaryotic cell.
The Cell Nucleus. The genetic material of a cell in interphase appears as dark threads. Eukaryotic cells have a membrane-bound cell nucleus . The nucleus contains most of a cell’s genetic material . Apoptosis. Apoptosis or programmed cell death has many roles including:
Chapter 9. The cell Nucleus. Biology Department of the Basic Teaching Colledge. Xiamixinuer · Yilike. The May of 2012. Chapter 9 Nucleus. Learning Objectives
The Cell Nucleus. The evolutional significance. The formation of nucleus was an essential event in evolution. Containing nucleus or not is an important difference between eucaryotic cells and procaryotic cells.
Low angle. Semicoherent. High angle. Incoherent. Based on angle of rotation. Twist. Interphase. Tilt. Based on axis. Mixed. Based on Lattice Models. Special. Epitaxial/Coherent. Random. Based on Geometry of the Boundary plane. Curved. Wulff-type constructions. Faceted. Mixed.
ALL CELL DIVISION STARTS WITH INTERPHASE. INTERPHASE. is part of the cell cycle that occurs between divisions. -During this phase the cell is producing materials necessary for cell division. -3 Phases G1- growth and development S - (Synthesis) chromosomes replicate (copy)
Interphase. Early Prophase. Late Prophase. Metaphase. Early Anaphase. Late Anaphase. Telophase. Cytokinesis. (‘little moon’). (‘on the nail’). Figure 5.6. Regions. Nuclear Envelope Nucleolus RER Centrosome with centrioles SER Golgi Apparatus Mitochondrium Lysosome Vesicle
Interphase. 95% of the time cells are doing things in order to survive. (grow, respiring, and removing wastes) This part of life is usually less than 20 minutes for a cell. Mitosis- only lasts about 5 minutes. Prophase. DNA makes coils. Metaphase.
. The Cell: Nucleus, Ribosomes. Nucleus. Function contains eukaryotic cell’s genetic library most genes in nucleus some genes located in mitochondria & chloroplasts Size ~ 5 microns (µm) in diameter. Nucleus structure. Structure