Darwin + Natural Selection
vocab word: to fight for resources
competition
organisms with favorable adaptations survive and _____________ their traits
pass on
what is carbon dating?
a process used to determine the age of organic materials(like fossils)
can an individual evolve?
NO - populations evolve
vocab word: more organisms are produced than can be supported by the environment
overproduction
Genetic variation _____________ the chances of individuals having adaptations that allow them to survive.
increases
Which type of reproduction produces the most genetic variation?
sexual reproduction
the change in the characteristics of a species over several generations and relies on the process of natural selection
evolution
vocab word: a positive trait that gives organisms an advantage
adaptation
Insects with natural ______________ survive and reproduce. Insects without natural _______________ do not survive and reproduce.
Resistance
this shows who is most closely related to whom
phylogenetic tree
what causes variation in a population?
mutations and sexual reproduction
vocab word: the organisms with the best traits survive
natural selection
When no individuals in a species have the traits to survive, the species goes __________.
Extinct
this record shows how species have evolved over time
fossil record
in order for a species to evolve, it must be able to...
reproduce
what selects the adaptations that are the most beneficial?
the environment
Darwin studied _____________ in the Galapagos Islands to learn about natural selection.
Finches
structures that are the same in different species
homologous structures
Which organic compound would be best for determining if species are related?
proteins