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






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






3. 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






4. 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






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






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






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






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






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






10. 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






11. Selects for the middle and against the extremes






12. Cells that can turn into other cells






13. 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






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






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






16. Mate choice; one sex chooses their mate






17. Humans selecting certain traits in domestic organisms






18. One extreme is selected over the other






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






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






21. 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






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






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






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






25. Sometimes different species share common ancestors






26. The idea that characteristics can enhance an organisms survival






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






28. Way more offspring are produced than by sexual reproduction






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

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






31. Related organisms have similar development plans






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






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






34. 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






35. 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






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






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






38. Direct competition for mates with the same sex






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






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






41. Selects for the extremes and against the middle






42. Directional selection - Disruptive selection - Stabalizing






43. A widely accepted idea with lots of evidence






44. A subset of a population colonizes a new area






45. The change in a populations genetics






46. Sexual partners chosen based on some characteristics






47. The organism with the most advantageous traits will survive






48. Form of reproduction more used because it creates Variation






49. Change in alleles due to random chance






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