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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. Mate choice; one sex chooses their mate






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






3. The organism with the most advantageous traits will survive






4. The idea that characteristics can enhance an organisms survival






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

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6. Directional selection - Disruptive selection - Stabalizing






7. 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






8. The change in a populations genetics






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






10. Selects for the extremes and against the middle






11. 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






12. Related organisms have similar development plans






13. Sometimes different species share common ancestors






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






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






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






17. 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






18. Change in alleles due to random chance






19. 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






20. Selects for the middle and against the extremes






21. Capable of asexual reproduction; most are not






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






23. Results in a genetically identical inidvidual






24. 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






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






26. A subset of a population colonizes a new area






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






28. A widely accepted idea with lots of evidence






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






30. Form of reproduction more used because it creates Variation






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






32. Way more offspring are produced than by sexual reproduction






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






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






35. One extreme is selected over the other






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






37. Cells that can turn into other cells






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






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






40. Direct competition for mates with the same sex






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






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






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






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






45. Humans selecting certain traits in domestic organisms






46. Sexual partners chosen based on some characteristics






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






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






49. Differences in appearances between the sexes






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