Ch 14 outline

Ch 14 outline - Ch 14 Outline I. What is a gene? unit of...

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Ch 14 Outline I. What is a gene? unit of heredity DNA sequence factor that helps determine a trait genes cannot by themselves produce a phenotype DNA (genotype) ------> RNA ------> protein (phenotype) transcription translation II. One gene, one polypeptide · some enzymes are composed of different subunits coded for by separate genes gene 1 -----> polypeptide 1 gene 2 -----> polypeptide 2 } enzyme gene 3 -----> polypeptide 3 III. Central Dogma DNA codes for RNA, RNA codes for proteins IV. RNA · How does RNA differ from DNA? o only one polynucleotide strand (not double-stranded) o sugar in RNA is ribose, not deoxyribose o uracil instead of thymine o RNA can base-pair with ss DNA adenine pairs with uracil instead of thymine DNA is in nucleus , proteins made in cytoplasm · How does information get from the nucleus to the cytoplasm? o Transcription in the nucleus, RNA exported to cytoplasm, has code for translation · What is the relationship between a specific nucleotide sequence in DNA and a specific amino acid sequence in protein? ·
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This note was uploaded on 12/09/2011 for the course REL 1306 taught by Professor Small during the Spring '11 term at Baylor.

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Ch 14 outline - Ch 14 Outline I. What is a gene? unit of...

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