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15 Cards in this Set
- Front
- Back
gene
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segment of DNA that is located in a chromosome and that codes for a specific hereditary trait
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DNA
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decoy ribonucleic acid , the material that contains the information that determines inherited characteristics
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nucleotide
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in a nucleic acid chin, a subnit that consists of a sugar, a phosphate, and nitrogenous base
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purine
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a nitrogenous base that has a double ring structure adenine or guanine
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pyrimidine
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a nitrogenous base that had a single thing structure in DMA either thymine or cytostine
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DNA replication
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the process of making a copy of dna
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DNA helicase
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ASB enzyme that unwind the DNS double helix during DNA replication
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DNA polymerase
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an enzyme that catalyzes the formation of the DNA molecule
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RNA
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ribonucleic acid a natural polymer that is present in all living cells and that plays a role in protein synthesis
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gene expression
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the manifestation of the genetic material of an organism in the form of the specific traits
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gene expression
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the manifestation of the genetic material of an organism in the form of specific traits
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transcription
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first step of gene expression, certain segments of DNA is copied into RNA by the enzyme polymerase.
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translation
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final step on the way from DNA to protein. synthesis of protein is directed NY a mRNA template. the info contained in the nucleotide sequence of the mRNA is read as a three letter word (triplets) called condon.
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condon
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trinucleotide sequence of dna/rna that corresponds to a specific amino acid. the genetic code describes relationships between DNA bases ( a+t, c+ g) in a gene and the corresponding protein sequence that it encodes
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mutation
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change in DNA, when something goes wrong in the DNA process
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