Exam 1: chapter 1 Flashcards
when describing the importance of Darwin’s theory of evolution, Theodosius Dobzhansky proposed that
” nothing in biology makes sense except in the light of evolution”
darwin realized that the often exquisite fit of species to their environment is primarily the result of
natural selection
what is evolutionary biology?
the study of the origin, maintenance, and diversification of life on Earth
to understand the evolution of a species, we need to know abt its ancestors and the changes that have occured within the lineage leading to that species. Darwin called this process as_____
descent with modification
which of the following best summarizes the process of evolution by natural selection?
mutations that improve the fitness of individuals will tend to increase in frequency over time
which of the following is an example of artificial selection
selection for cows that produce more milk
in what way are natural selection and artificial selection similar?
both result in an increased frequency of beneficial traits
in which of the following ways is artificial selection different from natural selection
artificial selection relies om humans choosing which traits are beneficial
antibiotic resistance evolves quickly because ____
antibiotics impose strong selection for selection
a branching tree showing the historial relationships among species is known as an
phylogenetic tree
a phylogenetic tree is best described as an
hypothetical portrayals of evolutionary relationships
which of the following is an example of observational research?
measuring the behavior of diff pollinators visiting flowers in a field
more than 100 yrs ago, Charles Darwin and his colleague Thomas Huxley hypothesized that humans share a common ancestor based on
anatomical evidence
the Anthropocene era is defined by
