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9 Cards in this Set
- Front
- Back
genetic material criteria |
Information Replication Transmission Variation
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Griffith's Transformations |
studied 2 strains of streptococcus pneumoniae
'S'-smooth: polysaccharide capsule protects bacterium from immune system
'R'-rough: no capsule |
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Steps of DNA replication |
1) DNA strands unwind 2)DNA rep begins outward from 2 rep forks 3) DNA rep continues in both directions |
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DNA polymerase |
able to covalently link nucleotides together from a primer which is made from DNA primase
can link nucleotides only in 5' to 3' direction |
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required proteins during DNA replication |
DNA helicase
DNA topoisomerase
single strand binding proteins |
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DNA helicase |
at each fork binds to one DNA strand and |
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DNA topoisomerase |
helps untwist the strands ahead of DNA helicase |
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ssBP |
coat each of single strands of template DNA to prevent them from reforming a double helix p |
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proofreading |
DNA polymerase can identify and remove a mismatching nucleotide from the daughter strand |