Bio 111

The cell theory -

The chromosome theory of inheritance - Genetic information is stored in chromosomes

• The central dogma - Genetic info is stored in dna > transfered to RNA where the info is temporarily stored > transferred to proteins to carry out cell functions

Evolution by natural selection

• Charles Darwin & Alfred russel Wallace independently

• People differ in characteristics ( traits), which can be passed down to their offspring (inheritance)

• Differing versions of characteristics increase the chance of survival

  ex. cayote hunting a white rabbit rather than a black rabbit

• The characteristics that are most optimal for survival & reproduction (adaptation)will increase the overall population and make the characteristic more common

Hypothesis vs Theory

• Hypothesis - a measuable/ testable statement that has an explananation for an observation

• Expiremtent- tests effects of factors

• prediction - Must be linked to a observable/mesurable result

• Theory - An explanation for a general class of phenomena or observations that are supported by a mass of evidence

Random vs Non-Random process

• Non random -

  ex. Predator eating mice that dont match the enviorment due to its characteristics allowing the predator to see the animal much easier

  Natural selection - beach mice with a lighter coat has a higher chance of survival as it blends in much better with the enviornment causing better chance of reproduction

• Random -

  ex. Genetic mutation of an animal

elements of well designed expirements

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