Bio 3400 1nd Edition Lecture 35 Outline of Last Lecture I Scientific terminology II Climate change fact and theory III Factors influencing climate IV The carbon cycle and atmospheric CO2 Outline of Current Lecture I Carbon cycle II Humans as selective agents III Domestication Current Lecture I Carbon cycle what can we do about it a Plant more trees carbon capture switching to energy sources that don t give off CO2 b Reduce emissions c Increase biosequestration i Reforestation ii Genetically engineer enhanced photosynthetic ability d Technological innovations i Engineer particle clouds to block solar radiation ii Launch spacecraft to reflect solar radiation iii Create giant algae blooms iv CO2 uptake machines II Humans as Selective Agents a Direct and indirect interactions with their species will influence their evolution i Putting a bird feeder outside b Requirements for evolution by selection i Variation ii Variation is heritable iii Differential reproductive success iv Relationship between trait and reproductive success c Characteristics of domestication i Often 2 phases 1 Initial domestication a Often not intentional 2 Deliberate breeding of traits These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute III IV V ii Human imposed selection 1 Protection transportation food commodities aesthetic appeal companionship Dog Domestication Phase 1 a Occurred before the development of agriculture b Humans were hunter gatherers c Variations in fearfulness d Less fearful acquire hunting scraps etc e Over time less aggressive strong association with humans Phase 2 a Deliberate breeding b Most breeds were developed in the last 100 years i Hunting guarding herding protection ii Many smaller closed groups breeds of dogs 1 Genetic drift very likely to happen Animal Domestication traits a Flexible diet b Fast growth rate c Will breed in captivity d Genetically based variation in tameness e Lower flight distance less likely to panic and flee f Modifiable social hierarchy
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