What makes humans different (from our ancestors)?
- particularly useful in the absence of agriculture.
- guts are generally smaller in carnivores than herbivores due to the relative ease of
extracting nutrients from animal as compared with pl
Humans as primates:
- Order: primates: group of mammals consisting of as many as 400 species, mainly
found in the tropics, whose ancestors are thought to have diverged 80 million years
- Primates are distinguished from other mammals by a # of shared
Human Evolution is still going on:
- It is a strange conceit of human beings to imagine that, having reached their
current state, their evolution has stopped (or has no effect/relevance to them!).
- > not all individuals are equally likely to survive/repr
The idea of evoked culture is that natural selection has produced animals able to
exhibit or adapt with the best phenotype for the environment they find themselves
in, across several different environments.
- > for a more a bit more detail
The gibbons, or lesser apes
- 13 species of gibbon (4 genera), South East Asia found.
- form long term pair bonds.
- Gibbons are specialized in hand, arm, and shoulder anatomy for branchiation: a
mode of locomotion involving swinging from branch to branch
Self-categorization theory (Turner et al., 1987)
Group-based responses result from categorizing at the group level (me to we).
Social categorization is context dependent meaning making.
Self-Categorization theory is related to the Social Identity Theory;
Stereotype: a belief about a group, the things the group members have in common and
the ways in which they differ from an out-group.
Not about accuracy
Group categorization -> apply stereotypes
Stereotypes affect perceptions of others
The molecular clock revisited
- Molecular clock: since much molecular change is neutral + since the probability
of mutation should be about the same in each generation, then molecular
differences between 2 lineages will accumulate at a roughly constant ra
cfw_Figure 10.3; 331
Paraphyletic includes some but not all descendant ancestors.
Monophyletic includes all previous descendant ancestors.
Polyphyletic includes all descendant ancestors + ancestors previously thought to