bio2 test 1 expert ta évolution

which concept did Charles Darwin and alfred Wallace independently discover

natural selection

Galápagos medium ground finches are found on Santa Cruz and San Cristóbal islands, which are separated by about 100 km of ocean. Occasionally, individuals from either island fly to the other island to stay. This can alter the allele frequencies of the population through which of the following mechanisms?

gene flow

The wing of a bird and the arm of a human are examples of

homologous structures

Which of the following best describes evolution?

It is the change in heritable traits in living populations over successive generations.

the theory of evolution states that:

organism populations can change physically over long periods of time

The wing of a bird and the wing of an insect are examples of _________ structures

analogous

Which of the following situations will lead to natural selection?

all of the above

Differences in domesticated animals over relatively short periods of time most likely occur through:

artificial selection

In science, a theory is:

An explanation that is supported by a vast amount of data

A trait that is similar between two organisms because of their evolutionary history is called a:

Homology

the arm of the human is homologous to the ____ of a bird

wing

which of these best definition of evolution

a change in the characteristics of a population. over time

Darwin and Wallace both realized that most species produce many more offspring thanks necessary to maintain a constant population. What happens to the surplus individuals that do not possess favorable traits

they do not survive to reproduce

what determines whether or not a trait will be passed on to the next generation

how well suited the trait is to the environment

the theory of natural selection states that

the best adopted individuals survive and reproduce contributing the most genes to the next generation

Mutations:

provide the potential for evolution

which of these actually evolves

populations

some of Darwins most important discoveries were based on studies of birds captured in:

the Galapagos islands

when unrelated organisms living under similar environmental pressures evolve superficially similar structures that are internally different, the structures are called:

analogous