Evolution Review

Mistakes or changes that occur int he DNA sequence are called....

• adatations
• Darwinism
• mutations
• natural selection

What do we call similar physical structures that indicate a link to a common ancestor?

• absolute dating
• adaptations
• gradualism
• homologous structures

Which beneficial variation would be most helpful in a desert environment?

• white fur
• claws for burrowing
• grean and black camouflage
• flippers

What is it called when an organism is best adapted to its environment, it will survive and reproduce more successfully than other organisms less adapted?

• cloning
• evolution of all species
• natural selection
• selective breeding

Natural selection results in change in a population's _____________ traits over time.

• inherited

• acquired

Over generations of time apart on different islands with different food sources, the separated populations of Galapagos finches accumulated genetic differences until each group had different beaks. This is an example of _____.

• natural selection

• genetic drift

• adaptation

• speciation

Individuals undergo evolution.

• True

• False

Which of the following is NOT an example of natural selection?

• People selectively breeding hamsters for size.

• Insect populations developing resistance to certain pesticides.

• Bacteria becoming resistant to antibiotics.

• Male birds of certain species inheriting colorful feathers that are more attractive to females.

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

How does a species change over time?

• by adapting to the environment

• changes in the gene frequencies in a population

• acquiring new traits

• they do not change