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Leslie Brunetta, "Spider Silk" | Talks at Google

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How could anything as complex, functional, and beautiful as an orb web result from chance changes in genes rather than by design? All adaptations to an animal’s environment, including spiderwebs, are the products of natural selection, which allows certain random changes in genes to be passed on to later generations. Natural selection is the major mechanism behind evolution, the process of change in a species over time. This change results from the accumulation of gene changes. The spiderweb has evolved gradually, over millions of years. Spiders, too, have evolved over time. Spiders and spider silks are thus like all animals and all adaptations.

Leslie Brunetta visited Google's office in Cambridge MA to discuss many facets of this topic. Her book is available on Google Play Books:

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