1 / 10

12-2 Chromosomes and DNA Replication

12-2 Chromosomes and DNA Replication. Pg. 295. A. DNA and Chromosomes. 1. Prokaryotes have no nucleus; contain a single, circular strand of DNA. A. DNA and Chromosomes. 2. Eukaryotes have 1000 times more DNA and it is more complicated. A. DNA and Chromosomes. 3. DNA Length

hye
Download Presentation

12-2 Chromosomes and DNA Replication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 12-2 Chromosomes and DNA Replication Pg. 295

  2. A. DNA and Chromosomes • 1. Prokaryotes have no nucleus; contain a single, circular strand of DNA.

  3. A. DNA and Chromosomes • 2. Eukaryotes have 1000 times more DNA and it is more complicated.

  4. A. DNA and Chromosomes • 3. DNA Length • E.Coli Bacteria (large intestine) 4,639,221 Nitrogen Bases!! (1.6mm long)

  5. A. DNA and Chromosomes • 4. Chromosome Structure • a. Nucleus of a human cell contains 1 meter of DNA! • b. Human DNA binds with protein called histones to form chromatin.

  6. B. DNA Replication • 1. Replication is a copying process used by DNA to duplicate (copy) itself. • 2. During DNA replication, the DNA molecule separates.

  7. B. DNA Replication • 3. Next, 2 new strands are made following the base pairing rules (A-T, C-G).

  8. B. DNA Replication • 4. Each original strand of the double helix serves as a template for the 2 new strands (Semi-Conservative).

  9. B. DNA Replication • 5. Many enzymes carry out replication (EX: Helicase unzips DNA) but the main enzyme is DNA Polymerase: • Joins nucleotides to make a DNA molecule • Proofreads DNA to correct mistakes animation

  10. Replicate this DNA!!

More Related