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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. Recognize and cut DNA at specific sequences usually palindromes






2. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






3. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






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






5. The region of the chromosome that holds the two sister chromatids together during mitosis






6. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






7. An ancestor that two or more descendants have in common






8. Synonym for protein; chain of amino acids






9. A geographic gradient in the extent to which a character is developed in a species






10. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






11. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






12. A base found in DNA (but not in RNA). This base pairs with Adenine.






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






14. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






15. Speciation preceded by a period of geographical isolation






16. The structure on a tRNA molecule that allows it interact with an mRNA molecule






17. Movement of organisms ro of from a population






18. How often a form of a gene appears in a gene pool






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






20. Change to a chromosome in which a fragment of the chromosome is removed






21. T or F If a nucleic acid contain uracil it is DNA






22. Even if the gametes of the two species meet - fertilization does not occur






23. The gradual changes in gene frequencies in a population due to random events






24. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






25. Translation occurs in the...






26. A mutation in which one nucleotide is replaced by another nucleotide






27. The adaptive increase in pigmentation as a result of human - induced pollutants






28. Which type of Rna functions as a blue print of the genetic code






29. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






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






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






32. The movement of genes between populations as a result of mating of migration






33. 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.






34. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






35. A taxon originating from and including a single common ancestor






36. A trait that masks the expression of another trait






37. The movement of individuals into an area






38. Gradual evolution within a lineage






39. The banding pattern of a persons DNA after being cut and run on gel is called






40. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






41. Determined the complete double helical structure of DNA






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






43. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






44. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






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






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






47. T or F A cloned organism has the same proteins as another organism






48. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






49. Is the evolutionary process whereby a population becomes better suited to its habitat






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