'Rrna ribosomal rna' diaporamas de présentation

Chapter 3

Chapter 3. A. Gene function Genes and protein synthesis and mutation (diagram) B. Genetic diseases Identification of genes Pedigrees/DNA markers Diseases (PKU, Albinism, CF, Huntington Disease, DMD) C. Use/Misuse of genetic information Genetic tests Prenatal testing

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?2? ?????????

?2? ?????????. ?2? ???????. DNA ? 27 ??. ???. ??? ????????? DNA ?????. ??? ? 66 ??. ????. RNA ? 6 ??. ????. ??????. ?????. DNA ?????????. DNA ?????. ???? ????? antiparallel? ?????????? ?????????? hydrogen bond? ??????? A ? T?C ? G ???????0.34 nm ?????3.4 nm ?10 bp? ??2 nm

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Cell Composition

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Protein Synthesis

Protein Synthesis. Transcription and Translation Mader Biology Chapter 14. Protein synthesis = Central dogma= DNA To RNA TO protein. Transcription: DNA transcribes code to mRNA in nucleus Translation: tRNA transports amino acids to mRNA on ribosome, builds polypeptide.

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Question of the Day

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DNA, RNA and DNA Replication

DNA, RNA and DNA Replication. What is deoxyribonucleic acid?. It controls the activities of the cell. Found in the nucleus, on chromosomes. Who discovered DNA?. James Watson and Francis Crick. They built a model of DNA using X-ray diffraction photographs by Rosalind Franklin.

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3.5.5: Discuss the relationship between one gene and one polypeptide.

3.5.5: Discuss the relationship between one gene and one polypeptide. One gene may code for multiple polypeptides due to alternative splicing (Post transcriptional modification). mRNA from one gene. Introns are transcribed but not translated Exons are transcribed and translated.

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