Test your basic knowledge |

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. Change in alleles due to random chance






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






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






4. The idea that characteristics can enhance an organisms survival






5. Invented the binomial method(naming of species); also believed that life was fixed






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






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






8. Direct competition for mates with the same sex






9. Related organisms have similar development plans






10. The change in a populations genetics






11. Differences in appearances between the sexes






12. 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






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






14. Selects for the middle and against the extremes






15. Selects for the extremes and against the middle






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






17. Mate choice; one sex chooses their mate






18. Cells that can turn into other cells






19. 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






20. Came up with the term catastrophism(sudden events that lead to extinction - but not in todays time)






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






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






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






24. The organism with the most advantageous traits will survive






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






26. Sometimes different species share common ancestors






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






28. Theory of a stable - nonevolving population in which frequency of alleles do not change; only occurs in large - isolated populations with random mating - and no natural selection or mutations






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






30. Recessive traits persistent to a certain population; recessive alleles hide from selection






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






32. Closely related organisms have more similar DNA sequences and protein structures






33. Comparing an unknown sample of DNA to a known sample by using Gel Electrophoresis; used in crime scenes - paternity tests - and remains identification






34. Results in a tissue or an organ that is identical to the DNA donor






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






36. 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






37. 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






38. Results in a genetically identical inidvidual






39. 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






40. Humans selecting certain traits in domestic organisms






41. Form of reproduction more used because it creates Variation






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






43. One extreme is selected over the other






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






45. 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






46. Another method designed to sort female sperm form male sperm; goes by size of sperm; females are bigger than male sperm






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






48. Capable of asexual reproduction; most are not






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






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