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2A. Distinguish between DNA and RNA.

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Presentation on theme: "2A. Distinguish between DNA and RNA."— Presentation transcript:

1 2A. Distinguish between DNA and RNA.
DNA Structure (12.1) State Standards 2A. Distinguish between DNA and RNA. 2B. Explain the role of DNA in storing and transmitting cellular information.

2 Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material Genetics Genetics is the branch of biology that studies ____________, the passing of __________ (characteristics) from parents to offspring. This passing of traits involves the 2 nucleic acids, _____ & _____.

3 Nucleic Acid Structure
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material Nucleic Acid Structure ____________ are the building blocks of DNA & RNA Nucleotides consist of a five-carbon ________, a __________ group, and a nitrogen-containing __________

4 The sugar found in DNA is called _______________.
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material DNA Structure The sugar found in DNA is called _______________.

5 The ladder is made of 2 very long chains of ____________.
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material DNA Structure Cont’d The ______ ______ shape of DNA is often compared to a twisted ________. The ladder is made of 2 very long chains of ____________.

6 Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material DNA Structure Cont’d The ______ of the ladder are represented by the alternating ____________ and ____________. The pairs of ________ (cytosine–guanine or thymine–adenine) form the ________ or rungs.

7 The ________ in a nucleic acid always pair up in the ________ way.
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material Base Pairing The ________ in a nucleic acid always pair up in the ________ way. This is called Chargaff’s rule.

8 __________ always pairs with __________.
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material Base Pairing Cont’d __________ always pairs with __________. The 2 sides of the ladder are held together by __________ __________.

9 DNA carries information in a ________ code.
Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material The DNA Language DNA carries information in a ________ code. Each sequence of 3 nucleotides codes for a certain ______ ______ or for the beginning or end of a sequence. The genetic code is ________ for each organism.

10 Chapter 12 Molecular Genetics 12.1 DNA: The Genetic Material Chromosome Structure DNA coils around histones to form nucleosomes, which coil to form __________ ________. The chromatin fibers supercoil to form __________ that are visible during cell division.


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