Term
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Definition
| single ringed bases ( thymine, cytosine, and uracil) |
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Term
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Definition
scientist that stated purine bases=pyrimidine bases
a-t
c-g |
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Term
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Definition
| first scientists to build a DNA structure and measured the width of the helix and the spacing of the bases |
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Term
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Definition
| twisted ladder shape of DNA formed by two strands of nucleotides |
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Term
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Definition
| beadlike proteins that DNA coils around |
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Term
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Definition
| formed from negatively charged phosphate groups and positively charged histone proteins |
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Term
| semiconservative replication |
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Definition
| parental strands of DNA separate, serve as templates, and produce DNA molecules that have one strand of parental DNA and one new strand |
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Term
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Definition
| an enzyme responsible for unwinding and unzipping the double helix |
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Term
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Definition
| enzyme that catalyzes the addition of appropriate nucleotides using free nitrogen bases and attaching them to the new DNA strand |
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Term
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Definition
| links the two sections of DNA |
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Term
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Definition
| DNA unwinds in multiple areas and multiple replications occur at the same time |
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Term
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Definition
| circular DNA strand is opened at the one origin in the replication process |
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Term
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Definition
| long strand of RNA nucleotides that are formed complemetary to one strand |
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Term
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Definition
| associates with proteins to form ribosomes in the cytoplasm and is the most unique form of genetic information |
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Term
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Definition
| smaller segments of RNA nucleotides that transport amino acids to the ribosome |
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Term
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Definition
| DNA code is transferred to mRNA in the nucleus |
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Term
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Definition
| enzyme that regulates RNA synthesis, binds to a specific section where an mRNA will be synthesized. ( unzipps and pairs back up) |
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Term
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Definition
| strand of DNA that is read by RNA polymerase |
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Term
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Definition
| intervening sequences not found in final mRNA and arent copied |
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Term
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Definition
| coding sequences that remain in the final mRNA |
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Term
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Definition
| three-base code in DNA or mRNA |
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Term
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Definition
| tRNA molecules act as the interpreters of the mRNA codon sequence |
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Term
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Definition
| 3-base coding sequence at the middle fold opposite of the codon |
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Term
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Definition
| permanent change occurs in a cells DNA |
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Term
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Definition
| substances which cause mutation |
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Term
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Definition
| type of DNA mutation involving the change in just one base pair |
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