C H A P T E R 8

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9th grade Biology Karteikarten am C H A P T E R 8, erstellt von Kris S am 30/11/2017.
Kris S
Karteikarten von Kris S, aktualisiert more than 1 year ago
Kris S
Erstellt von Kris S vor fast 7 Jahre
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Zusammenfassung der Ressource

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Cell division Reproduction at the cellular lever
Purpose of cell division - reproduction of single celled organisms - growth of multicellular organisms from a fertilized egg into an adult - repair and replacement of cells - sperm and egg production
Asexual reproduction Produces offspring identical to original cell or organism - inheritance of all genes from one parent
Sexual reproduction Produces off that are similar to the parents - inheritance of unique sets of genes from two parents
Prokaryotes Bacteria and Archaea
Binary fission "dividing in half"
Stages of Prokaryote Binary Fission 1. duplication of the chromosomes and separation of the copies 2. continued elongation of the cell and movement of the copies 3. division into two daughter cells
Eukaryotic - more complex -more genes - most genes are stored on multiple chromosomes within nucleus
Chromatin - long DNA molecule - proteins that help maintain the chromosome structure and control gene activity
Division Preparation - chromatin becomes compact
Eukaryotic cell division - duplicates all of it's chromosomes - two copies are sister chromatids -joined by
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