Grayce P. Storey
I. Objective:
Students will be able to:
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1. define DNA and tell where it is located.
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2. explain what the double helix looks like and name the chemical on it.
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3. explain where the chromosomes and genes are located in the cell and their function.
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4. know the difference between genetic fingerprinting and fingerprints.
II. Vocabulary
1. DNA
2. chromosomes
3. deoxiribose
4. fingerprint
5. genetics fingerprinting
6. genes
7. double helix
8. DNA fingerprinting
III. Chromosomes
A. Human beings have 46 chromosomes 23 pairs
B. Iocated in the nucleus of a cell
C. genes are located on the chromosomes
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1. inherited characteristics
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2. constructed of DNA segments
IV. DNA looks like a twisted ladder (double helix)
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A. Each rung is an alternating step of a sugar and a phosphate
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1. sugar—-deoxyribose
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2. phosphate—-base (A-adenine, T-thimine, C-cytosine and g-guanine)
V. DNA Fingerprinting
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A. A unique genetic map
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B. Looks like a bar code used in supermarkets
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C. PCR (polymerase chain reaction) process used to convert small amounts of DNA into large amounts
VI. Optional:
A. Review cell structure and point out the location of the chromosomes in the nucleus
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VII. Laboratory Activity
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A. DNA Fingerprinting
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B. UPJOHN The Secret of Life
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1. Optional: Video The Unity of LifeDiscusses how DNA binds together all forms of life
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2. The Secret of Life Videocassettes:The WGBH CollectionP.O. Box 2053Princeton, NJ 08543(800 ) 828-WGBHFax (609) 275-3767