Dna Replication Ppt High School

1 29 2007 2 17 33 pm document presentation format.

Dna replication ppt high school. Many kinds of gene mutations can occur especially during dna replication. Kent roosevelt high school last modified by. Enzyme brings in complementary n bases b. Links to other websites are provided for the user s convenience.

As these web sites are independently maintained the pittsford central school district is not responsible for any information facts or opinions contained on any of these web sites. On screen show 4 3 company. Ch 12 2 2007 2008 dna replication purpose. Process of dna replication 2.

Separates breaking h bonds double helix at the. Arial calibri wingdings default design microsoft powerpoint slide microsoft powerpoint 97 2003 slide dna replication animation gone crazy dna is anti parallel dna replication powerpoint presentation fill out dna replication enzymes chart powerpoint presentation topoisomerase enzyme helicase. Dna helicase unzips and unwinds the 2 strands by breaking h bonds. Where dna separates it makes a y shape replication fork 2nd.

Times new roman arial symbol calibri lock and key 1 lock and key dna replication when new cells are made step 1 step 2 step 3 food. Replication errors can cause mutations. Kent city school district other titles. Process of dna replication 3.

Chromosomal mutations are more likely to occur during meiosis mutations can be caused by several factors. Vocabulary for ppt 2 transcription and translation genes chapter 8 4 and 8 5 dna rna protein mrna trna rrna transcription rna polymerase. Cells need to make a copy of dna before dividing so each daughter cell has a complete copy of genetic information 3 proposed models of replication meselson and stahl experiment semi conservative model replication of dna base pairing allows each strand to serve as a template for a new strand new strand is 1 2 parent template 1 2 new dna anti parallel. Dna and replication copyright cmassengale dna replication dna polymerase can only add nucleotides to the 3 end of the dna this causes the new strand to be built in a 5 to 3 direction rna primer dna polymerase nucleotide 5 5 3 direction of replication copyright cmassengale remember how the carbons are numbered.

Dna polymerases start at replicaton forks adding new nucleotides and bases to the exposed strands dna polymerases also proofread the bases to make sure they are paired correctly. One side of dna molecule is a template for making the other side strand b. Dna replication occurs before the cell divides so that each cell has a complete copy of dna.