3. Selection & Speciation

Selection & Speciation Genetics & Adaptation SQA HIGHER BIOLOGY

Learning Content ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Natural Selection ,[object Object],[object Object],Organisms produce large numbers of offspring.

Examples of Natural Selection ,[object Object],[object Object],[object Object],[object Object]

Examples of Natural Selection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Speciation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Speciation ,[object Object],Gene Pool Mutation Natural Selection Gene Migration Non-random Mating Genetic Drift Chance Forms new alleles

Species ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Examples ,[object Object],[object Object],[object Object],[object Object],[object Object]

Continental Distribution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Adaptive Radiation ,[object Object]

Adaptive Radiation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Extinction & Conservation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conservation Task ,[object Object],[object Object],[object Object],[object Object]

Discuss What is Natural Selection? What do you think is meant by Artificial Selection? What other techniques do humans have for changing species?

Learning Content ,[object Object],[object Object],[object Object],[object Object]

Artificial Selection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Genetic Engineering ,[object Object],[object Object],[object Object]

Insulin Cut and Stick Human cells contain a gene for making insulin. Bacteria cells contain a ring of portable DNA called a plasmid. Extract the DNA from some human cells. Use an enzyme to cut the insulin gene out of the DNA. Use the same enzyme to cut bacteria DNA plasmid. Use a different enzyme to stick the human insulin gene into the bacteria plasmid. The plasmid holding the insulin gene is put into bacteria. The bacteria reproduce and start to make human insulin.

Genetic Engineering ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Genetic Engineering ,[object Object],[object Object],[object Object],[object Object],[object Object]

Genetic Engineering ,[object Object],[object Object]

Transgenic Varieties ,[object Object]

Transgenic Varieties ,[object Object],[object Object],[object Object],[object Object]

Somatic Fusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3. Selection & Speciation

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3. Selection & Speciation