Evolution

Which of the following is a term for a group of similar organisms that can reproduce fertile offspring?

• individual
• population
• species
• fossil

Over time, adaptions can lead populations to experience 

• environmental changes
• genetic changes
• geological changes
• extinction

what did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?

• different species on different islands
• all species on one of the islands
• identical species on all the islands
• the same species as North America

In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

All rabbits living in a particular area would be an example of a(n)

• population
• species
• fossil
• individual organism

What kid of isolation occurs when two populations of birds have different courtship dances?

• geographic
• sexual
• temporal
• behavioral

the hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigals

combined alleles of all individuals in a population is called

• phenothype
• gene pool
• mutation rate
• allele frequency

what type of isolation occures which the timing of reproduction is different between two populations?

• geographic
• temporal
• behavioral
• selective

which of the folllowing is an exammple of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the wings of an ostrich