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DNA contains the instructions for a living organism to grow and work DNA is found in the nucleus and makes up the 23 pairs of chromosomes DNA (Deoxyribonucleic.

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Presentation on theme: "DNA contains the instructions for a living organism to grow and work DNA is found in the nucleus and makes up the 23 pairs of chromosomes DNA (Deoxyribonucleic."— Presentation transcript:

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2 DNA contains the instructions for a living organism to grow and work DNA is found in the nucleus and makes up the 23 pairs of chromosomes DNA (Deoxyribonucleic Acid)

3 Genes DNA is made of many genes Genes have the instructions to build all of the proteins in our body

4 Making More DNA DNA gets copied from one generation to the next DNA replication-process that copies the DNA in a cell before it divides so each new cell will have a complete set of DNA or the instructions of how to work; takes place in the nucleus

5 The Steps of DNA Replication 1. DNA molecule “unzips” by breaking the hydrogen bonds that hold the bases together (DNA comes apart at the middle of each base pair) 2. New bases (green) are added to each strand of the DNA Muskopf, Shannan. Online Images. The Biology Corner. 12 May 2007. http://www.biologycorner.com/bio1/DNA.html

6 3. Two identical DNA molecules are formed DNA Replication is semi-conservative because each DNA molecule is composed of 1 old strand and 1 new strand 2 new DNA molecules Muskopf, Shannan. Online Images. The Biology Corner. 12 May 2007. http://www.biologycorner.com/bio1/DNA.html

7 Which bases would match the following DNA strand during DNA Replication? GCATATGGTCA

8 Which bases would match the following DNA strand during DNA Replication? GCATATGGTCA CGTATACCAGT


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