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Side ASide B
- most primitive in a particular lineage.
- variations found in populations.
- any traits that make individuals more successful in a particular environment.
- unique adaptation to harsh, but different environments.
Populations evolve; individuals...
- new genetic variation.
- migrants, crossing over, and sexual reproduction.
- neither harm nor help
- to have greater success.
- to be at a disadvantage.
- an optimum, average birthweight in humans of about 7 pounds and a modal clutch size in...
- absent or undetectable.
- extreme phenotypes.
- males that are twice as large as females.
- heterozygotes (HbA/HbS) have a reproductive advantage in an environment including malaria.
- introducing a small group onto an island.
- an epidemic drastically reduces the breeding population.
- population numbers shrink.
- adaptations must match the environmental requirements.
- fossilization was/is a rare event.
- tracks, burrows, teeth, skeletons, or casts.
- the ratio of isotope to daughter product in volcanic rocks.
- 3.5 BYA during the Archean eon.
- similar selection.
- convergence of form.
- they act early.
- similarities of ecology.
- ‘molecular clock.’
- are neutral.
The different ‘kinds’ of organisms are also known as different
- ‘reproductive isolation’
- fertile progeny.
- complete reproductive isolation.
- evolutionary change.
species which use external fertilization are less likely to develop
- ‘isolating mechanism.’
- ‘postzygotic’ or acting after the zygote has formed.
- physical separation or geographic isolation.
- ‘polyploids’ in a population.
- ‘phylogenetic tree.’
- ‘evolutionary relationships’
- ‘adaptive radiations.’