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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. Selects for the middle and against the extremes






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






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






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






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






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






8. The change in a populations genetics






9. Sometimes different species share common ancestors






10. Form of reproduction more used because it creates Variation






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






12. Humans selecting certain traits in domestic organisms






13. Capable of asexual reproduction; most are not






14. 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






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






16. Selects for the extremes and against the middle






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






18. 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






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






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






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






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






25. Direct competition for mates with the same sex






26. Way more offspring are produced than by sexual reproduction






27. Results in a genetically identical inidvidual






28. A widely accepted idea with lots of evidence






29. Cells that can turn into other cells






30. Directional selection - Disruptive selection - Stabalizing






31. 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






32. Sexual partners chosen based on some characteristics






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






34. Change in alleles due to random chance






35. 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






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






37. The idea that characteristics can enhance an organisms survival






38. Differences in appearances between the sexes






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






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






41. 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






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






43. One extreme is selected over the other






44. Forms that show how an organisms anatomy change over time






45. The organism with the most advantageous traits will survive






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






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






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






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






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