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Unformatted text preview: The information which leads to a phenotype is contained within the Chromosomes is Genes- region of the chromosome which region carries the information for one trait carries DNA- Deoxyribonucleic Acid- chemical chemical structure of a gene structure Genes contain information, which is passed on to offspring on The information itself codes for the The production of Proteins which are either structural or enzymes which catalyze the chemical reactions of life. chemical DNA- Deoxyribonucleic Acid DNA
- Nucleotides- Sugar, phosphate and a Sugar, nitrogenous base nitrogenous - Double stranded molecule - Adenine, Guanine- Purines, Cytosine Cytosine and Thymine-Pyrimidines and - Base Pairing is key- A-T and C-G llinks inks strands strands - Sequence of bases down strand is the Sequence key- information for coding proteins key Replication of DNA Replication
- Semi- conservative- one strand retained one when DNA is copied when DNA to Protein- Transcription and DNA Transcription Translation Translation
RNA- Ribonuceic Acid- Different sugar, RNA Different one different base one Messenger RNA (mRNA)- carries Messenger carries information from DNA to cytoplasm for translation into protein- single stranded translation Transcription- Transfer of information from Transcription Transfer DNA to mRNA DNA mRNA is Modified mRNA
Introns- non coding regions are spliced out non (removed) (removed) Exons- actual coding regions remain Cap and poly-A tail added for recognition by tail ribosome ribosome Translation Translation
Synthesis of protein via transfer RNA (tRNA) Occurs at Ribosomes either free in Ribosomes either cytoplasm or on Endoplasmic Reticulum 3 base pairs codes for one Amino acid, called a codon codon Protein- a chain of Amino Acids Protein...
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This note was uploaded on 01/26/2009 for the course BIOPL 2400 taught by Professor Silva,t. during the Fall '08 term at Cornell.
- Fall '08