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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. Sexual partners chosen based on some characteristics






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






4. Sometimes different species share common ancestors






5. A widely accepted idea with lots of evidence






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






8. Directional selection - Disruptive selection - Stabalizing






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






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






11. Related organisms have similar development plans






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






13. Selects for the middle and against the extremes






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






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






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






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






18. 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






19. Change in alleles due to random chance






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






21. Direct competition for mates with the same sex






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






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






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






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






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






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






28. In related organisms the underlying anatomy is similar even when the function is different






29. Selects for the extremes and against the middle






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






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






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






34. 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






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






36. The idea that characteristics can enhance an organisms survival






37. Way more offspring are produced than by sexual reproduction






38. One extreme is selected over the other






39. The change in a populations genetics






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






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






42. 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






43. 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






44. 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






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






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






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






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






49. Differences in appearances between the sexes






50. Cells that can turn into other cells