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FREE SPACE Fill in the 24 blanks above with the answers to the phrases below. Each blank = one box. Fill the blanks in any order. 1. The ___ ADAPTATION __ is any inherited characteristic (a genetic variation) that can increase an organism’s chance of survival. 2. Structures/limbs that are different in structure but similar in function (bat wing and butterfly wing) are known as ___ ANALAGOUS _ structures. 3. Evolution occurs as a result of __ NATURAL SELECTION _ (2 words). 4. The 5 conditions of Hardy-Weinberg equilibrium are: a. Large _POPULATION__. b. Random _MATING__. c. No __MUTATIONS__ that cause changes in genes. d. No movement of genetic information from one population to another - _IMMIGRATION__/emigration. e. No natural selection (no one is more fit to the environment than another). 5. __ HOMOLOGOUS __ structures, similar structure but different function, came from the same embryonic tissue. 6. ___ BIOGEOGRAPHY __ shows the geographically separated species may have descended from a common ancestor. 7. The strongest evidence for evolution and the best way to determine how closely species are related to each other is __ AMINO ACID SEQUENCING ___ (3 words). 8. A preserved remain from an ancient organism is a _ FOSSIL ___. 9. Embryos of several types of animals that look very similar during the early stages of development indicate that they may have a common __ ANCESTOR ___. 10. The process of humans choosing variations that they find useful is known as __ARTIFICIAL SELECTION__ (2 words). 11. _ VESTIGIAL __ structures are small, non-functioning organs that show an organism’s evolutionary past. 12. A diagram that shows the evolutionary relationship between a group of organisms is called a __ CLADOGRAM __. 13. Evolution occurs due to the change of the relative frequenc of _ALLELES__in a population over time. 14. The ability of an individual to survive and reproduce in its specific environment is called __ FITNESS ___. 15. When examining a fossil record, the oldest layer is at the __BOTTOM___. 16. Darwin sailed around for 5 years on a research vessel named the Beagle and based most of his conclusions on observations he made of wildlife in the __GALAPAGOS_ islands. 17. Genetic change in a population through time is known as _EVOLUTION_. 18. The 5 basic components of Natural Selection are: a. All species have __ GENETIC VARIATION __ (2 words) which allow each species to be different, even within itself. b. Organisms produce more __ OFFSPRING _ than can survive. c. Since more organisms are produced than can survive, there is __ COMPETITION __ (struggle for existence). d. Survival of the fittest. e. Descent with __ MODIFICATION _.