Episode 21 - Mechanisms of Evolution
Besides natural selection, evolution is influenced by mechanisms like gene flow, the random walk of genetic drift, and the novelty-generating phenomenon of genetic mutations.
15 Mai 201936min
Episode 20 - Natural Selection
The forces of natural selection remove from the gene pool those lineages too unfit to survive in a given habitat, while those with good health survive to make healthy offspring, and their lineages ten...
15 Mai 201935min
Episode 19 - Introduction to Evolution
A brief introduction to evolution, including its mechanisms, selective pressures, runaway effects, and the fundamental importance of evolution as a guiding force for the perpetuation of life.
15 Mai 201944min
Episode 18 - Gene Modification
Genetic information is complex; there's the gene sequence, the regulation of gene expression, and there are even mechanisms to modify genes, allowing a single gene to produce multiple different protei...
15 Mai 201939min
Episode 17 - Gene Expression
The gene itself encodes raw information, but this is just the beginning of gene expression, which is a complex, highly-regulated, and tightly-coordinated process.
13 Mai 201936min
Episode 16 - DNA Synthesis & Repair
New DNA molecules are generated through a complex replication process, and mutations can be repaired with a variety of mechanisms.
13 Mai 201940min
Episode 15 - Transcription & Translation
The genome encodes information to 'build' the organism; the process of transcription encodes the DNA information into RNA, and translation encodes the information into polypeptide chains, which form p...
13 Mai 201940min
Episode 14 - Meiosis
Meiosis is a specialized form of cellular replication, which creates many haploid daughter cells, each possessing a single copy of the genome.
13 Mai 201939min
