science
The species of finches that Charles Darwin found on the Galipo islands display different structural adaptions, one of the adaptions that Darwin noted was the
Birds, different shape beaks
Darwin began to formulate his concept of evolution by natural selection after
Observations of many species And their graphical locations
in the 1800s Charles Lyells work suggest that
Past geological events must be explained in the term of processes observable today
james huttons and charles lyell work was important darwin because the scientist
suggested that the Earth was owed enough for evolution To have occurred
The idea that only famine disease and war could prevent in this growth of human population population was presented by
Thomas malthus
Darwin realize that economist malthus theory Of population control
Could be in generalized to any population of organisms
james and Charles work suggest that
Earth is many millions of years old
in 1859, Charles published his revolutionary scientific ideas in a work titled
On the origin of species
Charles Darwin's authorizations that finches of different species on the guapos islands, have many similar physical characters support the hypothesis that these finches
Descended from common ancestors
according to Darwin's theory of natural selection, individuals, whose survive or the ones best adapted for their environment, their survival is due to the
Position of inherited adaptions that maximize fitness
when farmers select animals or plants to use for breeding they look for
Natural variations that are present in a species
when a foreman breeds only his or her best livestock, the process involved is
Artificial selection
when lions pray on a herd of antelope, some antelopes are killed in some escape, which part of Darwin's concept of natural selections might be used to describe this situation
Survival of the fittest
Charles Darwin called the ability of an organism to survive and reproduce and its specific environment
Fitness
according to Darwin's theory of natural selection, the individuals that tend to survive are those that have
Medications best to the environment
which of the following statements describe all members of the population share
They are all members of the same species
All the gene of all members of particle population make up the populations
Gene pool
which statement below about gene Paules is typically true
They contain two or more alleys for each inheritable trait
if an alley makes up 1/4 of a population allies for a given trait is relative frequency is
25%
in a population, the sum of relative frequencies of alleys for a particular trait is
Equal to 100%
The two main sources of genetic variation
Gene, shuffling, and mutations
Gene Scheffing includes the independent movement of chromosomes during the meiosis, as well as
Crossing over
The genius shuffling that cruise as a part of sexual reproduction
Does not change the jeans pool Ally's frequencies
The number of phenotypes produced for given trait, depends on
The number of genes that control the trait
The phenotype, for typical polygenic trait can often be expressed as
A bow shaped Curve
compared to a polygenic tree, a single gene trait tends to have
Fewer phenotypes
A polygenic trait can have
Mini possible genotypes producing many possible genotypes
natural selection act directly on
Phenotypes
which of the following is not a way in natural selection, affects the distribution of phenotypes
Chance events
when individuals at each end of a belly shaped curve of a phenotype frequencies have Fitness, the result is
Directional selection
when individuals with an average form of a trait have the high fitness result is
Stabilizing selection
in a population of finches, in which one group of birds has a short period like peak, and another group has a long, narrow beak what process has probably occurred
Disruptive selection
if a mutation introduces a new skin color in a lizard population, what factor might determine whether the frequency is the new alley will increase
Whether the mutation makes some lizards more fit for the environment than other lizards
in genetic drift, all frequencies can change because of
Chance
which of the following events do biologist consider a random change
Genetic drift
genetic drifts tend to occur in population
Are small
The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called
The founder effect
when similarity between natural solutions and genetic drift, is that both event
Involve a change in a Population Alley, Frequencies
this situation in which all frequencies of a population remaining constant is called
Genetic equilibrium
The alley frequency of a population are more likely to remain unchanged if
all meeting is Random
which factor would most likely disrupt, genetic equilibrium in a large population?
matting That is not Random
The separation of populations by barriers, such as rivers, mountains, or bodies of water is called
Geographical, isolation
A factor that is necessary for the formation of a new species is
Reproductive, isolation
what stimulant might develop in a population, having some plants whose flowers open at midday and other plants whose flowers open late in the day?
Temporal, isolation
according to the hardy, Wimberg, principal, genetic equilibrium would be more likely in a population of mice, if
No natural selection takes place
The geographical isolation of two populations of a species tend to increase differences between their gene pool because it
Prevent interpreting between the populations
although they often live in the same habitat, the American toad breeds earlier in spring in the following toads dies what can be Inferred from this information
The two species do not enter breed because the temporal isolation
which is the first step that occurred in the expectation of the gallop finches
Arrival of the founding population
Napoo finches species are an excellent example of
speciation