SE day 2 - Social Evolution Lecture Outline January 25th...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Social Evolution Lecture Outline – January 25th Essence of Darwinism Nature of living things and their reproductive tendencies 1.Individuals can be grouped together into SPECIES -Based of shared characteristics -Individuals of the same SPECIES can reproduce and produce fertile offspring -Biological Species Concept 2. Within a species or population there is variability -Every individual has a unique combination of genetic material 3. Some of the variation: -Is inherited from the previous generation -May be passed on to the next generation 4. Variation is enriched by the occurrence of spontaneous and random novelty -Mutation 5. Resources individuals need to survive & reproduce are finite -Competition must arise over access to resources -Some organisms will survive better and leave more offspring 6. Differential Survival -Some traits give individuals advantages in specific environments -Individuals possessing these traits are better able to exploit resources and leave more offspring 7. Those variants with an evolutionary advantage increase in frequency in succeeding generations 8. Natural Selection pressures are constant -Organisms become adapted to their environments becoming more efficient at obtaining food, avoiding predation -Crypsis enables organisms to blend in with their environment so they aren’t preyed on. -Finding mates, secondary sexual characteristics
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

SE day 2 - Social Evolution Lecture Outline January 25th...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online