Evolution Flashcards
Evolution occurs to (Blank1)not (Blank2)
Blank1= species not individuals
Evolution explains (blank) on earth today
Diversity
What is diversity?
Great variety of types of living things
Diversity
Between species (blank - blank blank) species on earth
10 - 100 million
Diversity
Within a (blank)
Species
Diversity is the result of (blank)
Evolution
How evolution works
Explained by (blank) and (blank)
Explained by Charles Darwin and Alfred Russell Wallace
How evolution works
Darwin visited (blank) on (blank)
How evolution works
Darwin visited Galapagos Islands on HMS Beagle
What was Darwins theory?
He hypothesized that these organisms had a common ancestor but have adapted to there a particular environment and changed over time
Evidence for evolution
- Common anatomical traits
- homologous structures
- DNA analysis
- embryo development
- vestigial organs
- fossil and fossil record
- process of evolution
Characteristics of natural selection
Overpopulation, inherited variation, competition and struggle to survive, successful reproduction
Natural selection in other places
Drug-resistant bacteria, elephants adaptation to hunters/poachers, repellent resistant insects
Adaptations
Traits or characteristics that help an organism survive in its ecosystem
Three types of adaptations
Structural, chemical, behavioral
Speciation
Formation of a new species, separation, adaptation, division
