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Recombinant Dna Technology

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. An accumulation of genetic charges over a certain amount of time






2. Change in the DNA sequence of an individual; the only true way to get a new allele; the source of all heritable variation






3. Cuts DNA in specific sites; the fragments created are usually predictable






4. First to publish mechanisms for evolution; Had 2 idea: Use and disuse - use it more gets bigger; less it disappears - Inheritance of acquired characteristics - pass on changes to offspring






5. Subset of natural selection that increases the likelihood of mating specifically






6. The process of sperm sorting; separating the male sperm from the female sperm; difference told by swimming speed; boy sperm swim faster than girl sperm; Theory might have flaws in it though - only works 50% of the time






7. Selection fro or against environment; leads to evolution only if variation has genetic components






8. The screening of embryos for genetic disorders; done in In Vitro fertilization(fertilization in a petri dish); PGD removes one cell from the embryo and screens it genetically; embryos with disorders are discarded - ones without are kept and implanted






9. A widely accepted idea with lots of evidence






10. Came up with the term Uniformitarianism(mechanisms for change in the past still occur today; believed at first there was no evolution






11. A circular piece of DNA in bacteria where the gene is placed in Recom. DNA technology






12. A process to help separate DNA fragments using an electrical current; helps to compare DNA samples by fragment pattern






13. All species on earth are fixed; no changes - no new species - no extinction






14. Distribution of organisms related to evolution; different organisms play the same roles on different continents; island organisms resemble organisms on nearby mainland






15. A subset of a population colonizes a new area






16. Believed that change was gradual;Gradualism(the mechanisms of the world - then - are the same today)






17. When a population becomes smaller and a few individuals survive the event






18. Mate choice; one sex chooses their mate






19. Sometimes different species share common ancestors






20. Scientific explanation of how life changes over time - science is based off of evidence - science is obtained with observation and testing - science is always open to question






21. The idea that characteristics can enhance an organisms survival






22. Directional selection - Disruptive selection - Stabalizing






23. Sexual partners chosen based on some characteristics






24. Can make large quantities of product; infection free; less expensive than a natural source






25. Mutation - Natural selection - Genetic drift - Bottleneck effect - Founder effect - Gene flow - and Mate choice/non - random mating






26. Form of reproduction more used because it creates Variation






27. Way more offspring are produced than by sexual reproduction






28. Cells that can turn into other cells






29. The movement of genes between two populations e.g. migration - immigration






30. The organism with the most advantageous traits will survive






31. 1.edits existing variation by using the material it has(variation that exists in population/ no new traits created by natural selection) 2. Has historical constraints(change in old structures) 3. Adaptations are compromises (good for one thing - bad






32. Cells that can become only a few different types of cells; mostly adult stem cells; found in bone marrow - the skin epidermis - etc; can sometimes be turned into Totipotent stem cells






33. Related organisms have similar development plans






34. Choosing the sperm/egg/embryo that will produce the desired child depending on DNA(genes)






35. Takes the gene from a needed product - puts it into another organism (usually bacteria) and it will make duplicates of the product






36. Taking good genes to replace bad genes; almost never works; has unintended side effects; sometimes just doesn't work; protein becomes degraded - etc






37. Traits that are neither advantageous nor disadvantageous; there is no selection






38. The more common a trait becomes the more likely it will be selected against






39. One extreme is selected over the other






40. A group of interbreeding organisms living in the same place at the same time






41. Differences in appearances between the sexes






42. The change in a populations genetics






43. Humans selecting certain traits in domestic organisms






44. Pharmaceutical animals; cloned animals used ot produce products for humans


45. Change in alleles due to random chance






46. Set sail on the HMS Beagle to travel the islands and areas for signs of evolution; First book written in 1839 'voyage of the Beagle'; Second book published in 1859 'The Origin of Species by means of Natural Selection






47. Heterozygous chromosomes have an affect on an individuals genetics/alleles






48. Number of offspring in the next generation; your contribution to the gene pool






49. Results in a genetically identical inidvidual






50. Cells that can become any cell in the body; found in the embryo