Test 5 Flashcards
Theory that organisms change over time
Evolution
The main factor that leads to the evolution of a species is
Random mutation
In order for a population not to evolve, which of the following must occur
no mutations must occur
Exhibiting behavior that endangers your life for the sake of your offspring is referred to as
altruism
type of speciation that occurs when two populations become geographically isolated from one another
allopatric speciation
in order to get an organic molecules from inorganic molecules, which compounds must not be present
oxygen
the most recent ancestor of modern man is likely
homo rhodesiensis
type of selective pressure that favors the extremes at either end over the average
disruptive selection
the big bang occurred how long ago
6 million years
the idea that one common species can give rise to two, new ones is an example of
divergent evolution
99.9% of all species that ever existed on earth are extinct
true
evolution occurs spontaneously in a population and cannot be stopped
true
all members of a population are equally well adapted to their environment
false
a population bottle-neck occurs when a population gets exceedingly large
false
in balance polymorphism, there is only one trait being selected for by the environment
false
what are some aspects of the theory of evolution
There was a “big bang”
Earth is millions of years old
there is evidence
the evidence is testable
What are some aspects of the creation theory
an all powerful being made everything
earth is very young (thousands of years)
there is no evidence
it is not testible
what is evidence for evolution
Fossil Records prove that organisms change over time
Biomolecular molecules like DNA, RNA, ATP, and amino acids are the same in all living things
Convergent and divergent evolution
when developing, vertebrates look the same
what was the goal of Stanley Miller’s apparatus
to create organic compounds from inorganic compounds
was Stanley Miller successful
yes
What are the criteria necessary for Hardy Weinberg’s equilibrium
No mutations
Genes are all equal
Random mating
allele frequency stays the same
Very large
is it possible for a population like the Hardy Weinberg to exist in nature
no
