Term
_______ Discovered harmful bacteria could turn virulent when mixed with bacteria that causes disease. |
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A substance prpared from killed or weakened microorganisms. |
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______ Determined that harmless bacteria could turn _______when mixed with bacteria that causes disease |
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Transfer of genetic material from one organism to another |
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The experiments of ______ and ______ yielded results that suggested DNA was the genetic material. |
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_____________ were used to show that DNA, not protein. is the genetic material. |
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in the year _____ Franklin and wilkins photograph DNA. |
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Watson and Crick determined that DNA is in the shape of a ________ ______ |
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____________ are the subunits that make up DNA. |
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Nucleotides are made up of a ____________ _________, a ________ ______ and an _____ ______ ______ |
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Definition
1. Phosphate Group 2.Nitrogen Base 3. Five carbon sugar |
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The 4 nitrogen bases in DNA. |
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1. Adenine 2. Guanine 3. Thymine 4. Cytosine |
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The pairing of the nitrogen bases between two strands of DNA is known as the ____-_______ _____ |
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_______ and _____ determined that a purine strand of DNA is always paired with a pyrimidine on the oppposite strand. |
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_______ and ________ are purines. |
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________ and ________ are pyrimidines. |
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The process of making of DNA is called _________ |
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_________ Break hydrogen bonds between base pairs. |
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What is the purpose of DNA replication? |
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Definition
To make a new copy of the DNA strand |
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This moves along the DNA strands adding mucleotides to the exposed nitrogen bases. |
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Errors or changes in the nucleotide sequence. |
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How do errors occur in DNA? |
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They attach the wrong nitrogen base. |
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The point where the DNA seperates. |
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Increases the speed of replication. |
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Definition
Multiple Replication Forks |
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How long does it take for replication forks to repair an entire humman chromosome? |
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