Natural& Artificial Selection Flashcards
What is artificial selection?
Deliberate selection of breeding by humans for desirable traits
What causes evolution?
Mutations
3 types of variation
Structural, functional and physiological
Define: adaptation
Process helping organisms survive and reproduce in particular environments
How are mutations passed on?
Gamete
Define: selective advantage
Genetic advantage that allows organism to be favored in survival& reproduction
What causes natural selection?
Selective pressures
biotic, predators, parasites, resource competition
Define: Fitness
of fertile offspring produced in next generation
Define: population
Localized group of indiviscals capable of interbreeding to produce fertile offspring
Define: gene pool
Alleles for loci in a population
When is there locus?
All individuals in population are homorygeors for same allele