DNA Structure & Function. Perspective They knew where genes were (Morgan) They knew what chromosomes...
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Transcript of DNA Structure & Function. Perspective They knew where genes were (Morgan) They knew what chromosomes...
![Page 1: DNA Structure & Function. Perspective They knew where genes were (Morgan) They knew what chromosomes were made of Proteins & nucleic acids They didn’t.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649eca5503460f94bd83ad/html5/thumbnails/1.jpg)
DNA Structure & Function
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Perspective
They knew where genes were (Morgan)They knew what chromosomes were made of Proteins & nucleic acids
They didn’t know which one was the gene Better case for proteins
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The DNA Structure
Watson and Crick Used model
exploration
Rosalind Franklin X-ray crystallography
Chargaff’s rule A-T; G-C
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![Page 5: DNA Structure & Function. Perspective They knew where genes were (Morgan) They knew what chromosomes were made of Proteins & nucleic acids They didn’t.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649eca5503460f94bd83ad/html5/thumbnails/5.jpg)
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DNA Replication
Life reproduces itself
Genes (DNA) are inherited
How does the structure of DNA make it easy to replicate itself for cell division?
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DNA Replication
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Cloning
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Genes: How they work
Review the flow of information from DNA RNA proteinAll our traits that are expressed (physical, biological, and chemical) is produced by proteins
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Genes: How they work
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The Genetic Dictionary
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Transcription
![Page 14: DNA Structure & Function. Perspective They knew where genes were (Morgan) They knew what chromosomes were made of Proteins & nucleic acids They didn’t.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649eca5503460f94bd83ad/html5/thumbnails/14.jpg)
RNA Processing
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Translation
How does the codon on mRNA get translated into an amino acid?
Adapter molecule?
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Transfer RNA (tRNA)
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Translation
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Translation
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MutationsKnowing the genetic code help us understand inherited disorders
A single genetic mutation
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Mutations
Any change in the nucleotide sequence of DNA
Note: the DNA sequence is not shown here but the RNA and amino acid sequence is represented
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Mutations
Base-substitutions can sometimes lead to a beneficial changeIt’s these beneficial changes that can lead to better adaptations and evolution of new species
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Mutations
Mutations are the only source of new genetic material
The diversity of life around us is due in large part to random mutations of the DNA nucleotide sequence