DNA Replication Section 12-2 in Textbook. ANIMAL CELL.

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Presentation transcript:

DNA Replication Section 12-2 in Textbook

ANIMAL CELL

Chromosomes- long thread like group of genes found in the nucleus. Gene- sequence of nitrogen bases on a chromosome that code for one characteristic

THIS IS WRONG! !!!!!!

DNA Replication (Copying) Replication is necessary for MITOSIS. (Cell division) Occurs during INTERPHASE in NUCLEUS Parent cellDaughter cells

Process of DNA Replication Enzyme “unzips” Original DNA Strand Each side acts as a Template for the NEW strand. complementaryEnzymes lay down the complementary base pairs. –Thymine pairs with Adenine –Cytosine pairs with Guanine –In RNA Adenine pairs with Uracil

In DNA: Adenine bonds with Thymine Guanine bonds with Cytosine In RNA: Adenine bonds with Uracil Guanine bonds with Cytosine

Original “Template” Strand = RED New Strand = BLUE

END RESULT…….. TWO EXACT COPIES OF DNA!!!

RNA vs DNA Physical Differences: DNA: Double Helix RNA: Single Strand Chemical Differences: DNA: Deoxyribose sugar and Thymine RNA: Ribose sugar and Uracil

DNA Replication Animation

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