Test your basic knowledge |

CSET Genetics And Evolution

Subjects : cset, science, genetics
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The comparison of the structures of different organisms






2. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






3. Name for oism with one dominant and one recessive allele






4. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






5. The study of the past and present distribution of species.






6. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






7. Breeding organisms with specific traits in order to produce offspring with identical traits






8. Synonym for protein; chain of amino acids






9. DNA that is coiled around proteins






10. Is found in DNA






11. The independant evolution of similar traits - starting from a similar ancestral condition






12. Condition in which an organism has extra sets of chromosomes






13. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






14. Because of base pairing in DNA the amount of






15. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






16. Actual remains of an organism such as bones - teeth - shells - etc.






17. Change to a chromosome in which part of the chromosome is repeated






18. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






19. A population partially isolated from other populations of the same species






20. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






21. Periods of rapid evolution punctuated by periods of little change






22. Features that are superficially similar but have different modes of development






23. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






24. The study relating the evolution of new charateristics to changes in the genes controlling development






25. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






26. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






27. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






28. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






29. Used x ray cyrstallography to create an image of DNA






30. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






31. A group of organisms of the same species occupying a given area.






32. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






33. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






34. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






35. A change in the base sequence of DNA; the ultimate source of new alleles






36. Which structure contains anticodons






37. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






38. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






39. Large - scale evolutionary changes that take place over long periods of time






40. Impression made from a organism in soft material such as sand or mud.






41. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






42. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






43. When competition causes two closely related species to become more different in regions where their ranges overlap






44. A unique combination of traits that are passed down from one generation to another.






45. Determined the concept of complementary base pairing






46. A combining of genes or characters different from what they were in the parents






47. How many codons are needed to specify three amino acids






48. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






49. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






50. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic