The Science of Everything Podcast – Details, episodes & analysis

Here we survey of the causes and consequences of genetic mutation, including a discussion of mechanisms of endogenous and induced mutations, rates of mutation, types of single nucleotide mutations, and the phenotypic effects of mutation. We also discuss various mechanisms for detecting and repairing genetic mutations, including base excision repair, DNA mismatch repair, nucleotide excision repair, double strand break repair. We conclude with an examination of large-scale chromosomal changes, including deletions, duplications, inversions, and translocations, unequal crossing over, with a brief look at polypoidy in plants and aneuploidy in humans. Recommended pre-listening is Episodes 34 and 35: DNA Structure and Function, and Episode 44: Cell Division.

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An introduction to classical Mendelian genetics, in which we discuss Mendel's experiments with peas and the laws of heredity that he discovered, including inheritance of one allele from each parent, the law of dominance, and the law of independent segregation. We then consider more complex cases of genetic inheritance, including sex-linked traits, incomplete dominance, codominance, and epistasis. The episode concludes with a discussion of quantitative traits determined by many genes, including how genetic variation is described, how sources of variance are identified using genome wide association studies, and the conceptual issues with defining heredity and separating the effects of genes from those of environment.

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A discussion of the metabolic pathways involved in breaking down proteins, carbohydrates, and lipids into simple components, extracting their energy, and building back up into more complex components needed for bodily function. We cover glycolysis, the citric acid cycle, lipolysis, beta oxidation, amino acid deamination, gluconeogenesis, fatty acid synthesis, and amino acid synthesis. Our overall focus is on the central role of acetyl-CoA and how the different metabolic pathways interact and intersect. Recommended pre-listening is Episode 18: Biochemistry Basics and Episode 75: Cellular Respiration.

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https://www.paypal.me/ScienceofEverything

A social scientific discussion and comparison of some of the major political ideologies in the world today, beginning with an overview of the origins, meaning, and limitations of the 'left-right' political spectrum, and continuing with an analysis of the historical origin and key beliefs of conservatism, liberalism, socialism, communism, anarchism, fascism, and other nationalist movements.

Continuing from Episode 69, I explore the diversity of the mammals, looking at all the mammalian orders and their major families. Special focus is given to primates and particularly hominids, which are discussed at the species level.

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In this episode we explore the diversity of the animal kingdom. I first discuss the history of taxonomy and give an overview of some key concepts such as morphological similarity, phylogenetic analysis, systematics, cladistics, binomial classification, and the taxonomic hierarchy. Then follows an explanation of the diversity of and relationships between the major animal phyla, including arthropods, echinoderms, molluscs, and many others, with special emphasis is given to the classes and orders in the phylum of chordata (vertebrates).

An overview of the structure and function of proteins. Beginning with a discussion of some key research methods for studying proteins, including column chromatography, electrophoresis, and x-ray crystallography, we then discuss the structure of proteins, with a focus on secondary structure, motifs, structural domains, and quaternary structure. The episode concludes with a look at protein function, including protein folding, denaturation, enzymatic function, and allosteric regulation. Recommended pre-requisites are Episode 18: Biochemistry Basics, and Episode 10: The Cell. Episode 32: Light and Optics may also be helpful for the crystallography portion.

Concluding the brief exploration of language begun last time, this episode examines semantics, including the distinction between sense and reference and different types of utterances, pragmatics, including conversational maxims and implicatures, and sociolinguistics, including prestige dialects and speech acts. Recommended pre-listening is Episode 66: An Overview of Language Part 1.

In this first of a two-part episode, I discuss the phenomenon of language. Here we consider phonetics, how sounds are produced and articulated, phonology, how different sounds are distinguished from one another and treated across different languages, morphology, how sounds are combined into units of meaning called morphemes, and in turn how these are combined into words, and syntax, how words are put together in accordance with particular rules to form sentences.

An introduction to the concept of money, including its uses, purpose, and a brief account of its history. I discuss the notion of money as a medium of exchange, a unit of account, and a store of value, and some of the properties that make particular goods useful as money. I also discuss various measures of the money supply, and briefly outline the difference between the monetary base and money created through the fractional reserve system. I discuss inflation, including its definition, causes, and effects on the economy, before concluding with a brief look at interest rates and exchange rates.