EVOLUTION TEST REVIEW

Statement most closely related to the modern theory of evolution

Organisms best adapted to a changed environment and more likely to reproduce and pass their genes to offspring.

Organisms would most likely have new gene combinations

Resulting from sexual reproduction

Geographic and reproductive isolation are most closely associated with

Speciation

If the same antibiotic is used too many times it can become less effective against a certain type of bacteria This observation is best explained by the

Survival and reproduction of unaffected bacteria

Beak structures differ between individuals of one species of bird these differences most likely indicate

The presence of a variety of food sources

When an octopus camouflages himself by walking on two tentacles and wrapping the rest around its body

The process of natural selection

If an ecosystem is changed through a natural disaster organisms will have the best chance of survival if

Their species exhibits genetic variation

One possible explanation for the fact that some simple, one celled organisms did not evolve into complex, multicellular organisms is that

These organisms possess traits that enable them to survive in a changing environment

Genetically inherited from there parents

Young birds that have been raised from isolation from members of there species build nests characteristic of their species this suggest that the nest behavior is

When the adaptive characteristics of a species are insufficient to allow it survival that species is likely to

become extinct

Certain bacteria are resistant to many antibiotics

one possible explanation for this change is that the antibiotics killed most of the bacteria that did not have a genetic variation for resistance

Billions of years ago life on Earth began with

simple single celled organisms

Ultraviolet radiation

would most likely increase the mutation rate in a culture of bacteria being grown in a laboratory experiment

When a species includes organisms with a wide variety of traits, it is most likely that this species will have

A greater change to survive if environmental conditions suddenly change

If only one type of tree is planted in an abandoned field, the ecosystem will

Contain little genetic variability

According to the theory of biological evolution most present day species of organisms

Descended from different species of organisms

Evolution

Described as a process of change in a population through time.

A certain species has little genetic variation. What would the rapid extinction of this species most likely result from the effective?

Environmental change

The fossil record of ancient life forms provide scientific life functions of

Evolutionary changes

Traits that are least beneficial to a species tend to decrease in frequency from generation to generation because these traits usually

Have a low survival value

Biological Evolution

In a population of birds the percentage of individuals having a certain gene changes from 20% to 60% over the span of several hundred years. This situation will most likely effect the rate of.

Modification of genes in sex cells

In a sexually species evolution could occur as a result of

Reproduce successfully

In order for a species to evolve in must be able to

The concept that new varieties of organisms are still evolving is supported by the

Increasing need for new antibiotics

Describes an effect of natural selection on a species

It favors the survival of certain members of the species and results in the change in the proportion of individuals with highly adaptive traits.