Term
| DNA Nucleotide consists of: |
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Definition
consists:
- a molecule of sugar deoxyribose
-phosphate group
- nitrogen base |
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Term
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Definition
DNA, total abundance purines is equal to toal abundance of pyrimidines.
A=T
G=C
A&G purines; T&C pyrimidines |
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Term
| 4 Nucleotides for DNA are: |
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Definition
Adenine (A)
Guanine (G)
Cytosine (C)
Thymine (T) |
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Term
| Four key features that define DNA structure |
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Definition
1. Helix- A&T has 2 H-bonds, C&G has 3H-bonds
2. antiparallel strands: 5' carbon sugar, 3' hydroxyl
3.nitrogen base exposure at grooves
4. right handed (curl right hand: axis of helix is thumb, fingers curled is sugar-phosphate backbone) |
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Term
| complementary base bair in DNA |
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Definition
adenine (A) --> thymine (T)
cytosine (C) --> guanine (G) |
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Term
| 4 important fucntions of DNA double helix structure. |
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Definition
1. genetic material stores organism's genetic info
2. genetic material susceptible to mutation
3. genetic material is precisely replicated
4. genetic material is expressed as phenotype |
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Term
| What is the structure of DNA? What evidence was there? |
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Definition
Structure of DNA is double helix & runs antiparallel
Evidence was through X-ray crystallography. |
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