BIOS 332: Genetics [Audio]
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BIOS 332: Genetics [Audio]
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BIOS 332: Genetics [Audio]
A daily podcast
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Episodes of BIOS 332
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Dr. Jason Tresser explains the controlling factors of gene expression in a bacterial cell. He describes the regions of genetic code that activate or repress a gene and how these function in response to stimuli.
Dr. Jason Tresser explains the processes of spermatogenesis and oogenesis during which gamete cells are produced. He discusses sex-linked traits and the processes that determine sex in an organism.
Dr. Jason Tresser discusses sex determination in various species. He covers the primary mechanisms that determine sex and some of the deviations that can occur, particularly in humans.
Dr. Jason Tresser explains how to construct a genetic library. He goes on to discuss a number of methods that can be used to sequence DNA, showing how modern techniques have continued to improve upon the techniques used in the past.
Dr. Jason Tresser explains non-Mendelian genetics and the various factors that can cause changes in inheritance ratios. He goes on to explain how certain phenotypes can be suppressed by factors outside the genome itself.
Dr. Jason Tresser explains the various types of mutations that can occur in an organism's genetic material. He explains how mutations can be chemically induced as well as how they can appear naturally in a cell.
Dr. Jason Tresser explains the next-generation processes used to sequence DNA: pyrosequencing and SOLiD sequencing. He then explains genotyping, a process of identifying known alleles in an individual's genome.
Dr. Jason Tresser concludes his teaching on genotyping and goes on to discuss transgenics. He explains the necessary components of a gene that must be in place for a host cell to utilize a foreign segment of DNA.
Dr. Jason Tresser explains how transgenics can be used to identity the expression of particular genes in an organism. He describes how genes can be probed to identify the mRNA being expressed in a cell and how this process can be used in microa
Dr. Jason Tresser explains how the manifestation of a genotype can be altered by the way a cell manages its gene expression. He goes on to explain linkage, where genes share a chromosome, and how these genes can be affected by recombination.
Dr. Jason Tresser explains various processes for cloning segments of genetic code. He considers a number of bacterial methods of cloning and notes that yeast can be used as well. Dr. Tresser concludes with a brief explanation of genomic librari
Dr. Jason Tresser explains how the expression of genes is controlled in multicellular organisms. He describes the various types of proteins that act as activators and repressors in a cell.
Dr. Jason Tresser describes several processes of transferring DNA between bacteria. He explains how phages infect bacteria with their own DNA and how this process can be manipulated to intentionally append bacterial genomes.
Dr. Jason Tresser concludes his teaching on mutations. He describes frame shifting and the various repair mechanisms that cells employ to correct mutations. Dr. Tresser goes on to discuss the genetic behavior of bacteria and how information is
Dr. Jason Tresser teaches gene mapping techniques that can be used to locate where a certain allele shows up in a species' genome. This is particularly important to human genetics, he explains, because humans have relatively few offspring and t
Dr. Jason Tresser makes an argument for intelligent design. He demonstrates the statistical impossibility of proteins arising spontaneously and the lack of other explanations. From this, he makes an inference based on the knowledge that codes c
Dr. Jason Tresser explains the process cells use to create mRNA, called transcription. He discusses the various proteins involved in the process and the various information groups that are strung together in RNA.
Dr. Jason Tresser explains the process of DNA replication that occurs in a cell. He discusses various polymerase proteins and how each of them contribute to the replication process. Dr. Tresser first addresses prokaryotic cells, then moves on t
Dr. Jason Tresser explains how cells organize their DNA into chromosomes using various types of proteins. He touches on several ethical questions to be considered when affecting the DNA organization of a cell.
Dr. Jason Tresser explains the structure of DNA and RNA. He goes on to discuss how genomes are stored within cells and the structures used to condense DNA to a manageable size.
Dr. Jason Tresser teaches Mendel's laws of genetics and how these can be used to predict the phenotypes of offspring. He then goes on to explain how these manifest during meiosis and the process of recombination that can occur as this happens.
Dr. Jason Tresser introduces the various types of information that can be stored in a code and their varying levels of meaning. He begins to make an argument for intelligent design, explaining that information arises only intentionally.
Dr. Jason Tresser explains the process of creating proteins from RNA. He explains the function of the rough endoplasmic reticulum and the proteins that are involved in the process.
Dr. Jason Tresser explains the process that cells use to adjust genomic information at the RNA level, giving special attention to splicing. He goes on to discuss the process of turning RNA information into proteins.
Dr. Jason Tresser explains how DNA can be artificially reproduced using polymerase proteins and primer tags of DNA. He goes on to explain the process of transcription, in which the information from DNA is translated into RNA.
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