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Definition
| the spiral-staircase structure characteristic of the DNA molecule |
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Definition
| in a nucleic-acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base |
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Definition
| a five-carbon sugar that is a component of DNA nucleotides |
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Definition
| the rules stating that cytosine pairs with guanine and adenine pairs with thymine in DNA, and that adenine pairs with uracil in RNA |
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Definition
| the nucleotide bases in one strand of DNA or RNA that are paired with those of another strand; adenine pairs with thymine or uracil, and guanine pairs with cytosine |
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Definition
| the process of making a copy of DNA |
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Definition
| an enzyme that unwinds the DNA double helix during DNA replication |
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Definition
| a Y-shaped point that results when the two strands of a DNA double helix separate so that the DNA molecule can be replicated |
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Definition
| an enzyme that catalyzes the formation of the DNA molecule |
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Definition
| a substance prepared from killed or weakened pathogens and introduced into a body to produce immunity |
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Definition
| describes a microorganism or virus that causes disease and that is highly infectious |
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Definition
| the transfer of genetic material in the form of DNA fragments from one cell to another or from one organism to another |
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Definition
| a virus that infects bacteria |
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