Evolution Review

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

• People selectively breeding hamsters.

• Bacteria becoming resistant to antibiotics.

• Insect populations developing resistance to certain pesticides.

• Male birds of certain species developing colorful feathers to attract female mates.

What characteristic did Darwin observe about the finches on the Galapagos Islands?

• Their beaks

• Their feathers

• Genotypes

• Their body sizes

Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? 

• Adaptation

• Variation

• Natural Selection

• Artificial Selection

Researchers discovered that the legs of birds are homologous to the feet of reptiles. Which claim is BEST supported by this fact?

• Birds do not require legs

• They randomly develop the same structures

• Birds and reptiles have a common ancestor

• Selection pressures have acted on birds, but not on reptiles

Images of the embryo and adult stages of three different organisms are shown.

Q. Which of the following is the best conclusion that can be drawn from this evidence?

• Having similar embryos indicates that these organisms eat the same types of food.

• Having similar embryos indicates that these organisms live in a similar environment.

• Having similar embryos indicates that these organisms share a recent common ancestor.

• Having similar embryos indicates that a certain protein controls how many legs the adult organisms will have.

What is the term for a feature that allows an organism to survive better in its environemtn?

• variation

• adaptation

• homologous structure

• vestigial structure

Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• Hardey-Weinberg equilibrium within a population

In natural selection, the selective agent is the

• humans

• breeders

• mutations

• environment

Which of the following is a fossil?

• a plant that has recently died

• a group of organisms that can reproduce

• a structure or organ that no longer functions

• a trace of an organisms that existed in the past

Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequences