Homeotic genes
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genes that determine the identity and positioning of anatomical structures
darwins "warm little pond"
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molecules underwent reactions that led to the formation of prebiotic
compounds like amino acids.
ploidy-polyploidy
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multiple sets of chromosomes
costs of group living
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1) Competition - conspecifics compete for limited resources (food, mates,
territory, etc)
2) Cheaters - attempts to usurp resources from others
3) parasites/diseases - pathogens spread more easily in groups
Scala naturae
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species ranked from lowest to highest with humans at top ○ For the ancient
Greeks, all life at all scales (development of individuals up to the diversity
of life) could be organised from simple to complex.
Allopatric speciation - two models
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- Vicariance model - one very large population subdivided into two large
populations
• Drift is unlikely due to large size of subpopulations; different selective
pressures
- Peripheral Isolate Model • Division of populations that are different sizes -
Give this one a try later!
genes that determine the identity and positioning of anatomical structures
darwins "warm little pond"
Give this one a try later!
molecules underwent reactions that led to the formation of prebiotic
compounds like amino acids.
ploidy-polyploidy
, Give this one a try later!
multiple sets of chromosomes
costs of group living
Give this one a try later!
1) Competition - conspecifics compete for limited resources (food, mates,
territory, etc)
2) Cheaters - attempts to usurp resources from others
3) parasites/diseases - pathogens spread more easily in groups
Scala naturae
Give this one a try later!
species ranked from lowest to highest with humans at top ○ For the ancient
Greeks, all life at all scales (development of individuals up to the diversity
of life) could be organised from simple to complex.
Allopatric speciation - two models
Give this one a try later!
- Vicariance model - one very large population subdivided into two large
populations
• Drift is unlikely due to large size of subpopulations; different selective
pressures
- Peripheral Isolate Model • Division of populations that are different sizes -
