LS2-2 Lec 7 Cell Division (4 Slides)

LS2-2 Lec 7 Cell Division (4 Slides) - 1 Life Sciences 2...

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Unformatted text preview: 1 Life Sciences 2 Chapter 11 The Cell Cycle & Cell Division Dr. Joseph Esdin Why Cell Division is Important Cell division is important in Reproduction Development Maintenance of organs Implanting blastocyst 6-9 days Uterus Fertilization Uterine tube Oocyte (egg) Sperm (a) (b) (c) (d) (e) (a) (b) (c) (d) (e) Zygote 2 days 3 days 4 days 6 days Ovary Reproduction Sex Cells Development Sperm Egg 2 Mouth Esophagus Stomach Small intestine Large intestine Lining of the small intestine is replaced every 5 days Tissue Repair and Maintenance Tissue Repair and Maintenance Erythrocyte Leukocyte Platelets Cell Division DNA replication Separation of DNA Regulation and control Genetic Material Linear DNA molecules that are associated with proteins called histones Chromosomes DNA and proteins Eukaryotes have two copies of each chromosome (homologous) Diploid (2n) 3 0.5 ! m Chromosomes Chromosome Sister chromatids Sister chromatids DNA Centromere G 2 Cell preparation P r o p h a s e M e t a p h a s e A n a p h a s e T e l o p h a s e Cytokinesis M itosis (M phase) ( I n t e r p h a s e b e g i n s i n d a u g h t e r c e l l s ) G 1 Cell growth G S DNA replication...
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LS2-2 Lec 7 Cell Division (4 Slides) - 1 Life Sciences 2...

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