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Evolution stuff

Evolution stuff, biology exam 1, p. 3

QuestionAnswer
Definition of evolution Descent with modification or changes in allele frequencies over generations (population changes over generations)
Microevolution is Small-scale changes in allele frequencies within a population
Macroevolution is Large-scale changes that lead to the formation of new species
Lamarck's theory Organisms evolve by acquiring traits during their lifetime and passing them on
Inheritance of acquired characteristics Traits acquired during life are passed to offspring (rejected by modern genetics)
Definition of adaptations traits that have evolved to help organisms survive and reproduce in their environment
Darwin's concept of descent with modification Over generations, organisms pass traits to offspring with slight changes, leading to evolution
What are Darwin's observations: Variation, heritability, overproduction, struggle for existence, differential survival and reproduction
What is Darwin's inference about variation Individuals vary in traits
What is Darwin's inference about heritability Traits that are passed down to offspring
What is Darwin's inference about overproduction More offspring are produced that can survive
What is Darwin's inference about struggle for existence Competition for limited resources
What is Darwin's inference about differential survival and reproduction individuals with favorable traits survive and reproduce more
What is the inference about Naural selection Advantageous traits become more common
Created by: josie_d
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